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BIOL 108: Human Body Unit 3 Exam--Practice Quiz

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Unit 3 Practice
Hannah Erickson
Quiz por Hannah Erickson, atualizado more than 1 year ago
Hannah Erickson
Criado por Hannah Erickson aproximadamente 7 anos atrás
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Resumo de Recurso

Questão 1

Questão
Label the different parts of the pulmonary circuit.
Image:
Blank Heart Blood Flow Diagram 255 Newcastle Betfred Eider Newcastle Horse Racing Betting Void (binary/octet-stream)
Responda
  • 1. Superior Vena Cava
  • 1. Inferior Vena Cava
  • 2. Superior Vena Cava
  • 2. Inferior Vena Cava
  • 3. Right Atrium
  • 3. Right Ventricle
  • 3. Left Atrium
  • 3. Left Ventricle
  • 4. Aortic Semilunar Valve
  • 4. Pulmonary Semilunar Valve
  • 4. Tricuspid Valve
  • 4. Bicuspid (Mitral) Valve
  • 5. Right Atrium
  • 5. Right Ventricle
  • 5. Left Atrium
  • 5. Left Ventricle
  • 7. Aorta
  • 7. Pulmonary Artery
  • 7. Left Pulmonary Veins
  • 7. Right Pulmonary Veins
  • 8. Right Atrium
  • 8. Right Ventricle
  • 8. Left Atrium
  • 8. Left Ventricle
  • 6. Aorta
  • 6. Pulmonary Artery
  • 6. Left Pulmonary Vein
  • 6. Right Pulmonary Vein
  • 9. Right Atrium
  • 9. Right Ventricle
  • 9. Left Atrium
  • 9. Left Ventricle
  • 10. Aortic Semilunar Valve
  • 10. Pulmonary Semilunar Valve
  • 10. Tricuspid Valve
  • 10. Bicuspid Valve
  • 11. Aorta
  • 11. Pulmonary Artery
  • 11. Left Pulmonary Veins
  • 11. Right Pulmonary Veins
  • 12. Superior Vena Cava
  • 12. Inferior Vena Cava
  • 13. Aortic Semilunar Valve
  • 13. Pulmonary Semilunar Valve
  • 13. Tricuspid Valve
  • 13. Bicuspid (Mitral) Valve
  • 14. Aortic Semilunar Valve
  • 14. Pulmonary Semilunar Valve
  • 14. Tricuspid Valve
  • 14. Bicuspid (Mitral) Valve
  • 15. Aortic Semilunar Valve
  • 15. Pulmonary Semilunar Valve
  • 15. Tricuspid Valve
  • 15. Bicuspid (Mitral) Valve
  • 16. Aorta
  • 16. Pulmonary Artery
  • 16. Right Pulmonary Veins
  • 16. Left Pulmonary Veins
  • 17. Deoxygenated blood
  • 17. Oxygenated Blood
  • 18. Deoxygenated Blood
  • 18. Oxygenated Blood

Questão 2

Questão
A low hematocrit suggests that you have a high oxygen-carrying capacity.
Responda
  • True
  • False

Questão 3

Questão
A high white blood cell count suggests that you are either sick or having an allergic reaction.
Responda
  • True
  • False

Questão 4

Questão
A differential white blood cell count is more useful than a total white blood cell count because it suggests what your body is fighting (such as a virus, bacterium, allergic reaction, etc.).
Responda
  • True
  • False

Questão 5

Questão
Select the phrase from the drop-down box with the most appropriate definition. 1. [blank_start]______[blank_end] Removes microorganisms and old red blood cells from the blood 2. [blank_start]______[blank_end] Removes microorganisms and cellular debris from your lymph 3. [blank_start]______[blank_end] An organ where T cells mature and undergo a selection process to kill cells that are ineffective or would attack your own body's cells 4. [blank_start]______[blank_end] Location where white blood cells are produced
Responda
  • 1. Lymph node
  • 1. Spleen
  • 1. Thymus
  • 1. Tonsil
  • 1. Red bone marrow
  • 2. Lymph node
  • 2. Spleen
  • 2. Thymus
  • 2. Tonsil
  • 2. Red bone marrow
  • 3. Lymph node
  • 3. Spleen
  • 3. Thymus
  • 3. Tonsil
  • 3. Red bone marrow
  • 4. Lymph node
  • 4. Spleen
  • 4. Thymus
  • 4. Tonsil
  • 4. Red bone marrow

Questão 6

Questão
This is the first step of a muscle contraction.
Responda
  • T-tubules transmit electrical impulses throughout a muscle cell.
  • Myosin binds to actin and pulls it towards the center of the sarcomere.
  • Acetylcholine binds to receptors on the muscle.
  • Troponin-tropomyosin complex shifts to expose myosin binding sites.
  • Calcium is released from the sarcoplasmic reticulum.

Questão 7

Questão
This is the second step of a muscle contraction.
Responda
  • T-tubules transmit electrical impulses throughout the muscle cell.
  • Myosin binds to actin and pulls it towards the center of the sarcomere.
  • Acetylcholine binds to receptors on the muscle.
  • Troponin-tropomyosin complex shifts to expose myosin binding sites.
  • Calcium is released from the sarcoplasmic reticulum.

Questão 8

Questão
This is the third step of a muscle contraction.
Responda
  • T-tubules transmit electrical impulses throughout the muscle cell.
  • Myosin binds to actin and pulls it towards the center of the sarcomere.
  • Acetylcholine binds to receptors on the muscle.
  • Troponin-tropomyosin complex shifts to expose myosin binding sites.
  • Calcium is released from the sarcoplasmic reticulum.

Questão 9

Questão
This is the fourth step of a muscle contraction.
Responda
  • T- tubules transmit electrical impulses throughout muscle cell.
  • Myosin binds to actin and pulls it towards the center of the sarcomere.
  • Acetylcholine binds to receptors on the muscle.
  • Troponin-tropomyosin complex shifts to expose myosin binding sites.
  • Calcium is released from the sarcoplasmic reticulum.

Questão 10

Questão
This is the fifth step of a muscle contraction.
Responda
  • T- tubules transmit electrical impulses throughout muscle cell.
  • Myosin binds to actin and pulls it towards the center of the sarcomere.
  • Acetylcholine binds to receptors on the muscle.
  • Troponin-tropomyosin complex shifts to expose myosin binding sites.
  • Calcium is released from the sarcoplasmic reticulum.

Questão 11

Questão
11. If I have a blood type of A+... -------------------------------------------------------------------------------- 11.1: What antigens do I have? [blank_start]_________[blank_end] 11.2: Specifically, where are those antigens located? [blank_start]______[blank_end] 11.3: What antibodies do I have? [blank_start]______[blank_end] 11.4: Specifically, where are those antibodies located? [blank_start]______[blank_end] 11.5: Which ABO blood type(s) can I safely give blood to? [blank_start]______[blank_end]
Responda
  • 11.1 A and Rh
  • 11.1 B and Rh
  • 11.1 O and Rh
  • 11.2 On red blood cells
  • 11.2 In the blood plasma
  • 11.3 Anti-A antibodies only
  • 11.3 Anti-B antibodies only
  • 11.3 Anti-A and Anti-B antibodies
  • 11.3 Neither anti-A or anti-B antibodies
  • 11.4 On red blood cells
  • 11.4 In the blood plasma
  • 11.5: Type A only
  • 11.5 Type A or Type AB
  • 11.5 Type B only
  • 11.5 Type B or Type AB
  • 11.5 Type O

Questão 12

Questão
Blood is made of 4 main components. What are they? NOTE: Your answers are not case-sensitive. 1. [blank_start]__________[blank_end] 2. [blank_start]__________[blank_end] 3. [blank_start]__________[blank_end] 4. [blank_start]__________[blank_end]
Responda
  • Plasma
  • Red blood cells
  • White blood cells
  • Platelets

Questão 13

Questão
The scientific term for a white blood cell is an erythrocyte.
Responda
  • True
  • False

Questão 14

Questão
Platelets help with blood clotting.
Responda
  • True
  • False

Questão 15

Questão
Please select the cellular components of blood from the list below.
Responda
  • Plasma
  • Erythrocytes (red blood cells)
  • Leukocytes (white blood cells)
  • Platelets

Questão 16

Questão
Plasma carries most of the oxygen in the body.
Responda
  • True
  • False

Questão 17

Questão
Which of the following causes a high hematocrit?
Responda
  • Exercise in a low-oxygen environment
  • Menstruation
  • Dietary iron deficiency

Questão 18

Questão
Hematocrit is determined by the percentage of blood that is made of platelets.
Responda
  • True
  • False

Questão 19

Questão
Please select the following that are TRUE about white blood cells (WBC):
Responda
  • Their main function is to support the immune system and defend against all things foreign
  • A high WBC count is a sign that your body is healthy
  • WBC count can be differentiated to help you know what is in your body (virus, bacterium, allergen, etc.)
  • WBCs can leave the blood vessels to go to tissues to the site of an infection or injury
  • WBCs are also known as leukocytes

Questão 20

Questão
What causes agglutination to occur?
Responda
  • Antigens attack red blood cells with foreign antibodies, which causes the antigens and antibodies to clump together (agglutinate)
  • Antigens attack white blood cells with foreign antibodies, which causes the antigens and antibodies to clump together (agglutinate)
  • Antibodies attack red blood cells with foreign antigens, which causes the antibodies and antigens to clump together (agglutinate)
  • Antibodies attack white blood cells with foreign antigens, which causes the antibodies and antigens to clump together (agglutinate)

Questão 21

Questão
What are the three steps of blood clotting? Step 1: [blank_start]__________[blank_end] Step 2: [blank_start]__________[blank_end] Step 3: [blank_start]__________[blank_end]
Responda
  • 1. Platelets form a plug
  • 1. Vascular spasm
  • 1. Clot forms a solid plug
  • 2. Platelets form a plug
  • 2. Vascular spasm
  • 2. Clot forms a solid plug
  • 3. Platelets form a plug
  • 3. Vascular spasm
  • 3. Clot forms a solid plug

Questão 22

Questão
Type O blood is the universal recipient blood type (ie, it can receive blood from any ABO type).
Responda
  • True
  • False

Questão 23

Questão
Select the most appropriate vocabulary term from the drop-down list for each question. 1. [blank_start]______[blank_end] These vessels have the lowest blood pressure of any vessel on this list 2. [blank_start]______[blank_end] This is the smallest blood vessel on this list 3. [blank_start]______[blank_end] These blood vessels transport blood from the heart to the tissues of the body 4. [blank_start]______[blank_end] These vessels remove fluid from the spaces between the cells in your body's tissues
Responda
  • 1. Artery
  • 1. Blood capillary
  • 1. Lymphatic capillary
  • 1. Vein
  • 2. Artery
  • 2. Blood capillary
  • 2. Lymphatic capillary
  • 2. Vein
  • 3. Artery
  • 3. Blood capillary
  • 3. Lymphatic capillary
  • 3. Vein
  • 4. Artery
  • 4. Blood capillary
  • 4. Lymphatic capillary
  • 4. Vein

Questão 24

Questão
Select the appropriate term from the drop-down list for each cellular immunology attribute. 1. [blank_start]__________[blank_end] Kill infected body cells 2. [blank_start]__________[blank_end] Target specific antigens and can produce memory cells 3. [blank_start]__________[blank_end] Can kill a bacterium or virus that has not yet entered one of your cells 4. [blank_start]__________[blank_end] A non-specifc defence
Responda
  • 1. B cell
  • 1. T cell
  • 1. Natural killer cell
  • 1. Phagocytic cell
  • 1. B cell and T cell
  • 1. T cell and natural killer cell
  • 1. Natural killer cell & phagocytic cell
  • 2. B cell
  • 2. T cell
  • 2. Natural killer cell
  • 2. Phagocytic cell
  • 2. B cell and T cell
  • 2. T cell and natural killer cell
  • 2. Natural killer cell & phagocytic cell
  • 3. B cell
  • 3. T cell
  • 3. Natural killer cell
  • 3. Phagocytic cell
  • 3. B cell and T cell
  • 3. T cell and natural killer cell
  • 3. Natural killer cell & phagocytic cell
  • 4. B cell
  • 4. T cell
  • 4. Natural killer cell
  • 4. Phagocytic cell
  • 4. B cell and T cell
  • 4. T cell and natural killer cell
  • 4. Natural killer cell & phagocytic cell

Questão 25

Questão
Select the appropriate type of muscle from the drop-down list with its appropriate definition. 1. [blank_start]______[blank_end] Moves a bone of insertion towards a bone of origin 2. [blank_start]______[blank_end] Lines the walls of blood vessels 3. [blank_start]______[blank_end] Generates pressure that moves blood around the body
Responda
  • 1. Cardiac muscle
  • 1. Skeletal muscle
  • 1. Smooth muscle
  • 2. Cardiac muscle
  • 2. Skeletal muscle
  • 2. Smooth muscle
  • 3. Cardiac muscle
  • 3. Skeletal muscle
  • 3. Smooth muscle

Questão 26

Questão
This is the only muscle type that is under voluntary control:
Responda
  • Cardiac muscle
  • Skeletal muscle
  • Smooth muscle

Questão 27

Questão
24. When you stand up suddenly after lying down for awhile, the pressure in your carotid artery (the major blood vessel that delivers ~80% of the blood to your brain) immediately decreases as gravity increases the flow of blood down and away from your brain and impairs the flow upwards toward your brain. How should the carotid artery respond… should it:
Responda
  • Contract (vasoconstriction)
  • Relax (vasodilation)
  • Not change

Questão 28

Questão
If you become dehydrated, and your body senses system-wide low blood pressure, how should your major arteries respond to restore a higher, normal pressure?
Responda
  • Contract (vasoconstriction)
  • Relax (vasodilation)
  • Not change

Questão 29

Questão
If a capillary bed in your spleen senses elevated blood pressure, how should your local arterioles respond to restore a lower, normal, safe pressures?
Responda
  • Contract (vasoconstriction)
  • Relax (vasodilation)
  • Not change

Questão 30

Questão
The major function of the 1st line of defense against pathogens is:
Responda
  • Specific defenses fight one particular antigen
  • Non-specific defenses fight off anything foreign that enters the body
  • Keep pathogens out of the body

Questão 31

Questão
Examples of the 1st line of defense against pathogens:
Responda
  • Fever, inflammation, Natural Killer cells, phagocytes
  • T cells, B cells, antibodies
  • Skin, acidic secretions, mucous membranes

Questão 32

Questão
The general function of the 2nd line of defense against pathogens is:
Responda
  • Specific defenses fight one particular antigen
  • Keep pathogens out of the body
  • Non-specific defenses fight off anything foreign that enters the body

Questão 33

Questão
Examples of the 2nd line of defense against pathogens include:
Responda
  • T cells, B cells, antibodies
  • Fever, inflammation, Natural Killer cells, phagocytes
  • Skin, acidic secretions, mucous membranes

Questão 34

Questão
The general function of the 3rd line of defense against pathogens is:
Responda
  • Specific defenses fight one particular antigen
  • Keep pathogens out of the body
  • Non-specific defenses fight off anything foreign that enters the body

Questão 35

Questão
Examples of the 3rd line of defense against pathogens:
Responda
  • Skin, acidic secretions, mucous membranes
  • T cells, B cells, antibodies
  • Fever, inflammation, Natural Killer cells, phagocytes

Questão 36

Questão
Arteries move blood away from the heart.
Responda
  • True
  • False

Questão 37

Questão
Veins move blood toward the heart.
Responda
  • True
  • False

Questão 38

Questão
Capillaries are the thickest and largest of the blood vessels.
Responda
  • True
  • False

Questão 39

Questão
Label the different muscle layers of blood vessels.
Image:
A Hr0c Hm6 Ly9p Lmlt Z3 Vy Lm Nvb S9a Un Ru Qz Zw Ln Bu Zw== (binary/octet-stream)
Responda
  • 1. Smooth muscle with elastic fibers
  • 1. Endothelium
  • 1. Connective tissue
  • 2. Smooth muscle with elastic fibers
  • 2. Endothelium
  • 2. Connective tissue
  • 3. Smooth muscle with elastic fibers
  • 3. Endothelium
  • 3. Connective tissue

Questão 40

Questão
An aneurysm is a weakening of the blood vessel wall.
Responda
  • True
  • False

Questão 41

Questão
Select the following which can cause an aneurysm to occur:
Responda
  • The blood vessel bulges outward
  • The blood vessel pinches inward
  • The blood vessel dies

Questão 42

Questão
What are the three methods of venous return (ie, how does blood return to the heart)? 1. [blank_start]__________[blank_end] 2. [blank_start]__________[blank_end] 3. [blank_start]__________[blank_end]
Responda
  • One-way valves
  • Skeletal muscles
  • Respiratory muscles

Questão 43

Questão
These are the thin-walled receiving chambers of the heart:
Responda
  • Right atrium
  • Right ventricle
  • Left atrium
  • Left ventricle

Questão 44

Questão
These are the thick-walled, strong chambers of the heart:
Responda
  • Right atrium
  • Right ventricle
  • Left atrium
  • Left ventricle

Questão 45

Questão
What is the proper order of the SYSTEMIC CIRCUIT of the heart? [blank_start]left atrium[blank_end] --> [blank_start]left ventricle[blank_end] --> [blank_start]aorta[blank_end] --> [blank_start]body[blank_end] --> [blank_start]inferior vena cava[blank_end] --> [blank_start]right atrium[blank_end]
Responda
  • left atrium
  • left ventricle
  • aorta
  • body
  • inferior vena cava
  • right atrium

Questão 46

Questão
Arrange the following components of a muscle in order of increasing size:
Responda
  • Myofibril, fiber, fascicle, muscle
  • Fiber, myofibril, fascicle, muscle
  • Muscle, myofibril, fascicle, fiber
  • Fascicle, myofibril, fiber, muscle

Questão 47

Questão
The primary energy source used by muscle cells to generate ATP is
Responda
  • Calcium ions
  • Fatty acids
  • Proteins
  • Glucose

Questão 48

Questão
Blood doping is artificially increasing
Responda
  • Volume of blood plasma
  • Overall volume of blood
  • Number of RBCs
  • Number of WBCs

Questão 49

Questão
Calcium is important in muscle contractions because it
Responda
  • Helps the muscle action potential spread throughout the muscle cell
  • Binds to troponin, which moves tropomyosin away from myosin binding sites on actin
  • Quickly regenerates ATP after the ATP stored in the cell is used up
  • Binds to myosin, causing actin to slide past myosin, which causes the muscle to shorten

Questão 50

Questão
Which of the following would NOT cause an increase in the force generated by a contracting muscle?
Responda
  • More motor units recruited (or stimulated)
  • Larger motor units recruited (or stimulated)
  • Action potentials sent to the muscle more frequently
  • Larger action potentials sent to the muscle

Questão 51

Questão
Passive immunity differs from active immunity in that passive immunity:
Responda
  • Is not effective against a preexisting condition
  • Involves the introduction of antibodies from an outside source
  • Results in the production of memory cells
  • Causes long-term immunity

Questão 52

Questão
Hemoglobin is a component of blood plasma.
Responda
  • True
  • False

Questão 53

Questão
This type of cell is responsible for producing and releasing antibodies:
Responda
  • Plasma cell
  • Phagocyte
  • Natural killer cell
  • T cell

Questão 54

Questão
The “lub” of the “lub-dub” heart sounds that can be heard through a stethoscope happens when the right and left [blank_start]ventricles[blank_end] [blank_start]contract[blank_end].
Responda
  • ventricles
  • atria
  • relax
  • contract

Questão 55

Questão
Vaccines contain antigens of the pathogen.
Responda
  • True
  • False

Questão 56

Questão
Which of the following cell types is most useful to a runner in a marathon?
Responda
  • Slow-twitch muscle fibers
  • Fast-twitch muscle fibers
  • Reticular muscle fibers
  • Tetanic muscle fibers

Questão 57

Questão
An [blank_start]embolism[blank_end] occurs when a clot that forms in an undamaged vessel becomes dislodged, circulates through blood vessels, and eventually becomes stuck in a vessel, thereby blocking the flow of blood through that vessel.
Responda
  • embolism
  • aneurysm
  • infarction
  • thrombus

Questão 58

Questão
A person with dysfunctional platelets will have problems with
Responda
  • Fatigue/low energy levels
  • Increased risk of infection
  • Inflammatory responses
  • Impaired blood clotting

Questão 59

Questão
The left ventricle has a more muscular wall than the other three chambers of the heart because the left ventricle must generate enough blood pressure to pump blood to tissues throughout the body.
Responda
  • True
  • False

Questão 60

Questão
When the hormone erythropoietin is released in response to low oxygen levels, it is transported to [blank_start]red bone marrow[blank_end] to stimulate red blood cell production.
Responda
  • kidney
  • spleen
  • red bone marrow
  • liver

Questão 61

Questão
Match each definition with its associated term from the drop-down list. 1. [blank_start]______[blank_end] A disorder of the respiratory system that causes permanent damage by breaking down lung tissue 2. [blank_start]______[blank_end] A blockage in a blood vessel that deprives cells of oxygen, causing tissue death 3. [blank_start]______[blank_end] Caused by an infection in the respiratory tract that increases mucus production, which decreases airway diameter, reducing air flow 4. [blank_start]______[blank_end] Can be caused by reduced iron, hemoglobin, or red blood cells
Responda
  • 1. Asthma
  • 1. Bronchitis
  • 1. Emphysema
  • 2. Anemia
  • 2. Aneurysm
  • 2. Embolism
  • 3. Asthma
  • 3. Bronchitis
  • 3. Emphysema
  • 4. Anemia
  • 4. Aneurysm
  • 4. Embolism

Questão 62

Questão
Match the appropriate term from the drop-down list to the following definitions. 1. [blank_start]______[blank_end] The volume of air that fills your lungs after you’ve exhaled as much air as you possibly can 2. [blank_start]______[blank_end] CANNOT be measured using a spirometer 3. [blank_start]______[blank_end]The amount of air entering the lungs during a normal resting breath
Responda
  • 1. Vital capacity
  • 1. Residual volume
  • 1. Tidal volume
  • 1. Total lung capacity
  • 3. Vital capacity
  • 3. Residual volume
  • 3. Tidal volume
  • 3. Total lung capacity
  • 2. Vital capacity and residual volume
  • 2. Vital capacity and tidal volume
  • 2. Vital capacity & total lung capacity
  • 2. Residual volume and tidal volume
  • 2. Residual volume & total lung capacity
  • 2. Tidal volume & total lung capacity

Questão 63

Questão
Match the appropriate term from the drop-down box to its definition. 1. [blank_start]______[blank_end] Fragments of cells that help form blood clots 2. [blank_start]______[blank_end] Carries most of the oxygen traveling in your blood 3. [blank_start]______[blank_end] Makes up more than half of the volume of your blood
Responda
  • 1. Blood plasma
  • 1. Platelets
  • 1. White blood cells
  • 1. Red blood cells
  • 2. Blood plasma
  • 2. Platelets
  • 2. White blood cells
  • 2. Red blood cells
  • 3. Blood plasma
  • 3. Platelets
  • 3. White blood cells
  • 3. Red blood cells

Questão 64

Questão
The functional difference between the systemic circuit and the pulmonary circuit is that the systemic circuit [blank_start]delivers oxygen[blank_end] [blank_start]to tissues[blank_end] and the pulmonary circuit [blank_start]picks up oxygen[blank_end] [blank_start]from the lungs[blank_end].
Responda
  • 1. delivers oxygen
  • 1. picks up oxygen
  • 2. to tissues
  • 2. from the lungs
  • 3. delivers oxygen
  • 3. picks up oxygen
  • 4. to tissues
  • 4. from the lungs

Questão 65

Questão
The pulmonary circuit uses more pressure than the systemic circuit.
Responda
  • True
  • False

Questão 66

Questão
A typical blood pressure is 120/80 mmHg. ---------------------------------------------------------------------------------- 1. Does this refer to pulmonary or systemic pressure? [blank_start]______[blank_end] 2. What’s happening in the heart to generate the 120 mmHg? [blank_start]_______________[blank_end] 3. What’s happening in the heart when the blood pressure falls to 80 mmHg? [blank_start]_______________[blank_end]
Responda
  • pulmonary pressure
  • systemic pressure
  • 2. ventricular systole
  • 2. ventricular diastole
  • 3. ventricular systole
  • 3. ventricular diastole

Questão 67

Questão
You feel cold at the beginning of a fever because chemicals released cause your brain (hypothalamus) to reset your body’s thermostat to a higher temperature, which causes you to feel cold even though your body is at its usual 98.6°F.
Responda
  • True
  • False

Questão 68

Questão
Your fever ‘breaks’ when your hypothalamus resets your thermostat back to the normal temperature, but because your body has increased its temperature to match the higher setting you now feel hot.
Responda
  • True
  • False

Questão 69

Questão
One benefit of a high fever is that proteins can denature (unfold) at high temperatures.
Responda
  • True
  • False

Questão 70

Questão
One risk of a high fever is that it may inhibit some bacterial growth.
Responda
  • True
  • False

Questão 71

Questão
When you breath more deeply and quickly during exercise, this helps you
Responda
  • Unload more carbon dioxide by increasing the percent of air in your lungs that is carbon dioxide.
  • Unload more carbon dioxide by decreasing the total air pressure in your lungs.
  • Get more oxygen by increasing the percent of air in your lungs that is oxygen.
  • Get more oxygen by increasing the total air pressure in your lungs.

Questão 72

Questão
When hiking in the mountains at 12,000 ft of elevation, the atmospheric pressure is about 483mmHg. Oxygen makes up ~14% of alveolar air. The alveolar (lung) PO2 (partial pressure of oxygen) would be [blank_start]66mmHg[blank_end], which will result in [blank_start]less[blank_end] oxygen moving into the blood compared to what you would experience at sea level, where the atmospheric pressure is [blank_start]higher[blank_end].
Responda
  • 66mmHg
  • 760mmHg
  • less
  • more
  • higher
  • lower

Questão 73

Questão
A quiet/resting exhale relies on
Responda
  • Contraction of the diaphragm and intercostal muscles
  • Contraction of intercostal and abdominal muscles
  • Recoil of lung tissues and contraction of the internal intercostal muscles
  • Surface tension of fluid lining the air sacs in the lungs and recoil of elastic fibers in lung tissue.

Questão 74

Questão
Select the following true statements about the effect of smoking on the respiratory system:
Responda
  • Smoking inhibits the activity of cilia lining the respiratory tract.
  • Particles and debris from the smoke accumulate in the mucus of the airway and increase risk for infections by pathogens.
  • The production of mucus increases in response to the presence of smoke.
  • Cilia once damaged by smoking can regrow once you stop smoking.

Questão 75

Questão
When comparing viruses and bacteria, which of the following is correct?
Responda
  • Viruses are larger than bacteria
  • Viruses and bacteria contain genetic material
  • Viruses have membrane-bound organelles; bacteria do not have membrane-bound organelles
  • Viruses are pathogens; bacteria are beneficial

Questão 76

Questão
Select all of the lymphatic structures from the list below:
Responda
  • Thymus
  • Spleen
  • Kidney
  • Tonsils

Questão 77

Questão
Erythropoietin is released by the [blank_start]kidneys[blank_end] and travels through the blood to the [blank_start]red bone marrow[blank_end] where it stimulates red blood cell production.
Responda
  • 1. Thymus
  • 1. Kidneys
  • 2. Thymus
  • 2. Kidneys
  • 1. Red bone marrow
  • 2. Red bone marrow

Questão 78

Questão
Breathing in carbon monoxide can cause health problems because
Responda
  • It competes with oxygen for binding sites on hemoglobin, which reduces oxygen loading at the lungs and delivery to the tissues
  • It can come out of solution while circulating in the blood, which forms tiny, painful bubbles in the blood
  • It can cause the formation of blood clots, which can block blood flow through vessels and cause tissue death from lack of oxygen
  • It reacts with oxygen to form carbon dioxide in the blood

Questão 79

Questão
Ebola has a high [blank_start]virulence[blank_end] but a fairly low [blank_start]transmissibility[blank_end].
Responda
  • 1. transmissibility
  • 1. virulence
  • 2. transmissibility
  • 2. virulence

Questão 80

Questão
The "lub" of the "lub-dub" heart sounds that can be heard through a stethoscope happens when which valves close? Select all that apply.
Responda
  • Aortic semilunar valve
  • Pulmonary semilunar valve
  • Tricuspid valve
  • Bicuspid (mitral) valve

Questão 81

Questão
Vaccination results in passive immunity.
Responda
  • True
  • False

Questão 82

Questão
The [blank_start]alveoli[blank_end] is the site of gas exchange.
Responda
  • larynx
  • alveoli
  • thymus
  • trachea

Questão 83

Questão
Humans must constantly breathe in oxygen in order to stay alive, because they use oxygen
Responda
  • To efficiently make large quantities of ATP
  • As an important source of energy for cells
  • To make carbon dioxide, which is then used to produce ATP
  • To make glucose

Questão 84

Questão
Which of the following causes the swelling that is part of inflammation?
Responda
  • Vasoconstriction of local blood vessels
  • Enlargement of lymph nodes
  • Increased permeability or leakiness of local blood vessels
  • T cells that are attracted to the site of injury or infection

Questão 85

Questão
As you exhale, the diaphragm [blank_start]relaxes[blank_end] and becomes [blank_start]more[blank_end] dome-shaped.
Responda
  • contracts
  • relaxes
  • less
  • more

Questão 86

Questão
As you inhale, the diaphragm [blank_start]contracts[blank_end] and becomes [blank_start]less[blank_end] dome-shaped.
Responda
  • contracts
  • relaxes
  • less
  • more

Questão 87

Questão
The smallest known pathogens that contain RNA or DNA are called
Responda
  • Prions
  • Bacteria
  • Viruses
  • Allergens

Questão 88

Questão
Hypertension risk factors: [blank_start]High salt intake[blank_end] [blank_start]Stress[blank_end] [blank_start]Age[blank_end] [blank_start]Heredity[blank_end]
Responda
  • High salt intake
  • Stress
  • Age
  • Heredity

Questão 89

Questão
A heart attack is caused by the death of tissue due to a coronary vessel blockage.
Responda
  • True
  • False

Questão 90

Questão
The immune system and lymphatic system are synonymous (the same).
Responda
  • True
  • False

Questão 91

Questão
Select the following that are part of the INNATE defense system
Responda
  • Native killer cells
  • T cells
  • B cells
  • Neutrophils
  • Eosinophils

Questão 92

Questão
Cytotoxic T cells:
Responda
  • Non-specific
  • Specific to one antigen
  • Memory response
  • Activated in the bloodstream
  • Activated in a lymph node
  • Kill abnormal or infected cells

Questão 93

Questão
The flu shot gives you passive immunity.
Responda
  • True
  • False

Questão 94

Questão
[blank_start]Antigens[blank_end] are in active immunization that helps you fight infections, whereas [blank_start]antibodies[blank_end] are in passive immunization that helps your body fight infections.
Responda
  • 1. Antigens
  • 1. Antibodies
  • 2. antigens
  • 2. antibodies

Questão 95

Questão
The upper respiratory tract deals with air only.
Responda
  • True
  • False

Questão 96

Questão
The purpose of the diaphragm is to power breathing.
Responda
  • True
  • False

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