Copy and Edit

Respiration Physiology PMU 2nd Year

Description

Respiration
Med Student
Quiz by Med Student , updated more than 1 year ago
Med Student
Created by Med Student almost 8 years ago
776
24
0

Resource summary

Question 1

Question
Inspiration occurs as a result of:
Answer
  • an upward movement of the diaphragm
  • movement of the ribs closer together due to the contraction of the inspiratory intercostal muscles
  • downward movement of the diaphragm
  • a and b
  • b and c

Question 2

Question
In order for the lungs to function normally, the intrapleural pressure must:
Answer
  • be lower than alveolar pressure
  • be between +5 and +10 mmHg above the atmospheric pressure
  • alternate between being less than and greater than the atmosphere pressure
  • change as respiratory demands of the body change
  • be the same as the atmosphenc pressure

Question 3

Question
Most of the CO2 that is transported in blood is:
Answer
  • dissolved in the plasma
  • bound to haemoglobin
  • in carbonic acid
  • in bicarbonate ions
  • in carbonic anhydrase

Question 4

Question
In which vesicular bed does hypoxia cause vasoconstriction?
Answer
  • coronary
  • pulmonary
  • cerebral
  • muscle
  • skin

Question 5

Question
Which sf the following is the site of the highest airway resistance?
Answer
  • mouth
  • largest bronchi
  • medium sized bronchi
  • smallest bronchi
  • alveoli

Question 6

Question
Compared with the systemic circulation, the pulmonary circulation has a:
Answer
  • higher flow
  • lower resistance
  • higher arterial pressure
  • higher capillary pressure
  • higher cardiac output

Question 7

Question
Hypoventilation will cause
Answer
  • hypercapnia
  • anoxia
  • hypoxia
  • hypocapnia
  • a and c

Question 8

Question
Which of the following events is caused by an increased pCO2 in tissues?
Answer
  • an increased pH
  • decreased association between hemoglobin and O2
  • decreased pH
  • vasodilatation
  • b and c

Question 9

Question
Vital Capacity includes:
Answer
  • Tidal Volume
  • Expiratory Reserve Volume
  • Residual Volume
  • Inspiratory Reserve Volume
  • a, b and d

Question 10

Question
Which muscles contract for quiet breathing?
Answer
  • abdominal
  • external intercostal muscles
  • diaphragm
  • pectoral muscle
  • b and c

Question 11

Question
Which of the following events are sympathetic effects?
Answer
  • vasoconstriction in the lungs
  • dilation of the bronchi
  • vasodilation in the lungs
  • constriction of the bronchi
  • a and b

Question 12

Question
Which of the following is the respiratory function of the lungs?
Answer
  • regulation of lung blood pressure
  • lung ventilation
  • diffusion of gases between the alveolar air and blood
  • fat metabolism
  • b and c

Question 13

Question
Which factors affect the gas diffusion through the respiratory membrane?
Answer
  • membrane thickness
  • membrane area
  • tidal volume
  • diffusion quotient
  • a and b

Question 14

Question
Gas exchange in the respiratory system of humans takes place in the:
Answer
  • trachea
  • bronchus
  • bronchioles
  • alveoli
  • larynx

Question 15

Question
As regards the distribution of ventilation (V) and perfusion (Q), the VQ ratio:
Answer
  • gradient of change of ventilation is greater than that of per fusion
  • ventilation increases up the lung
  • perfusion increases up the lung
  • V/Q ratio at apex is greater than at base
  • none of the above

Question 16

Question
Surfactant:
Answer
  • is produced by type 1 alveolar cells
  • acts like detergent in water
  • reduces the amount of negative intrapleural pressure
  • reduces blood flow to the lungs
  • increases pulmonary compliance

Question 17

Question
Carbon dioxide transport is:
Answer
  • 70% dissolved in plasma
  • 70% carbamino hemoglobin
  • 70% bicarbonate
  • 10% bicarbonate
  • unaffected by pO2

Question 18

Question
Obligatory respiratory muscles are:
Answer
  • the diaphragm and mm. intercostales interni
  • the diaphragm and mm. intercostales externi
  • mm. abdominales
  • mm. serrati posteriores inferiores
  • all of the above

Question 19

Question
The bronchial muscles relax under the influence of:
Answer
  • epinephrine
  • atropine
  • epinephrine and atropine
  • bradikinine and histamine
  • acetylcholine

Question 20

Question
For the surfactant it is true that:
Answer
  • is produced by type II alveolar cells
  • consists of phospholipids, proteins and carbohydrates
  • decreases the alveolar surface tension at the end of expiration
  • protects the lungs from atelectasis and edema
  • all of the above

Question 21

Question
For the alveolar capillary membrane it is true that:
Answer
  • consists of alveolar epithelium, pulmonary capillary endothelium and their base membranes with very thin interstitial space between them;
  • diffusion of 02 and CO2 occurs across it
  • has better permeability for 02 than CO2
  • a and b
  • none of the above

Question 22

Question
Dilation of bronchi can be achieved by:
Answer
  • increased level of catecholamines
  • decreased level of catecholamines
  • increase of acetylcholine and serotonin levels
  • increase of bradikinine and histamine levels
  • a, c and d

Question 23

Question
Normal breathing at rest is called:
Answer
  • polypnoe
  • eupnoe
  • tachypnoe
  • dyspnoe
  • hyperpnoe

Question 24

Question
During expiration:
Answer
  • the thoracic cage recoils and the diaphragm moves upwards
  • the intrapleural pressure decreases
  • the intrapleural pressure increases
  • a and b
  • a and c

Question 25

Question
The sympathetic division of ANS affects the bronchial muscles activating:
Answer
  • α-adrenergic receptors
  • β-adrenergic receptors
  • M-cholinergic receptors
  • N-cholinergic receptors
  • H2 receptors

Question 26

Question
Tidal Volume (TV) is:
Answer
  • the volume of air, which passes through the lungs per minute
  • bigger than the Residual Volume (RV)
  • an element of the Functional Residual Capacity (FRC)
  • a, b and c
  • 0.5-1 approximately

Question 27

Question
The intrapleural pressure is:
Answer
  • higher than the atmospheric pressure
  • lower than the atmospheric pressure
  • equal to the atmospheric pressure
  • depends on the water molecules surface tension and elastic fibers
  • b and d

Question 28

Question
The anatomical dead space
Answer
  • includes the volume of air within the an passages up to the terminal bronchioles
  • is the space where gas exchange doesn't occur
  • is approximately 140 ml
  • is approximately 500 ml
  • is about 6 L.min-1

Question 29

Question
The Residual Volume (RV) is:
Answer
  • the volume of air. which remains in the lungs after maximal expiration
  • the volume of air, which remains in the lungs after maximal inspiration
  • is about 2-3 L
  • is the tidal volume plus the inspiratory reserve volume
  • a component of the Vital Capacity (VC)

Question 30

Question
Which of the following factors shifts the dissociation curve of HbO2 to the right:
Answer
  • increased pCO2
  • decreased pCO2
  • decreased pO2
  • increased pO2
  • increased pH

Question 31

Question
It is not true that Vital Capacity (VC):
Answer
  • is a sum of ERV+TV+IRV
  • depends on sex and age
  • depends on chest measurement
  • is a sum of IC+ERV
  • is a sum of TV+ERV+RV

Question 32

Question
There are smooth muscles in the respiratory system:
Answer
  • on the external surface of the lungs
  • on the medial surface of the lungs
  • in the trachea, bronchi and bronchioles
  • around the alveoli
  • on the external and medial surfaces of the lungs

Question 33

Question
It is true that the air in the alveoli:
Answer
  • has a higher CO2 content than the atmosphere
  • has lower 02 content than in the atmosphere
  • consists of N2 approximately equal to that in the atmosphere
  • has the name components as the atmosphere
  • a, b and c

Question 34

Question
The elastic fibers in the lungs are situated:
Answer
  • around the alveoli
  • around the terminal branches of the bronchi
  • on the external and the medial surface of the lungs
  • a and b
  • all of the above

Question 35

Question
The peripheral chemoreceptors are situated:
Answer
  • on the ventral surface of medulla oblongata
  • on the dorsal surface of medulla oblongata
  • in arcus aortae and arteria carotis communis
  • in the inferior and superior venae cavae and the right atrium
  • in the hypothalamus

Question 36

Question
Which of the following compounds doesn't take part in the transport of CO2 under physiological conditions:
Answer
  • carbamino Hb
  • carboxi Hb
  • NaHCO3
  • physically dissolved in fluids
  • carbamino Hb and physically dissolved in the fluids

Question 37

Question
Which of the following factors increases the rate of breathing:
Answer
  • decreased pCO2
  • increased pO2
  • alkalosis
  • decreased pCO2 and increased pO2
  • increased pCO2 and decreased pO2

Question 38

Question
The ventilation/perfusion (V/Q) ratio of 0.8 refers to:
Answer
  • the upper parts of the lungs in upright position
  • the middle parts of the lungs in upright position
  • the lower parts of the lungs in upright position
  • in all parts of the lungs in supine position
  • b and d

Question 39

Question
Which of the following does not happen during inspiration?
Answer
  • the ribs move upward
  • the diaphragm lifts up
  • the antero-posterior dimensions of the chest are increased
  • the transverse dimensions of the thorax are increased
  • the scalene and sternocleidomastoid muscles can be recruited for inspiration

Question 40

Question
Total Lung Capacity (TLC) of men would normally be about:
Answer
  • 4200 ml
  • 1500 ml
  • 6000 ml
  • 8000 ml
  • 10000 ml

Question 41

Question
Oxygen enters a cell via?
Answer
  • diffusion
  • filtration
  • osmosis
  • active transport
  • passive transport

Question 42

Question
Most of the carbon dioxide produced by tissues is transported to the lungs as:
Answer
  • small gas bubble in the plasma
  • gas bound to the hemoglobin in the red blood cells
  • bicarbonate ions in the plasma
  • gas bound to white blood cells and albumin
  • gas transported through the lymphatic system

Question 43

Question
The need to breathe is caused by:
Answer
  • a drop in blood pH
  • a rise in blood pH
  • a drop in blood oxygen levels
  • a drop in carbon dioxide levels
  • none of the above

Question 44

Question
Where does gas exchange take place?
Answer
  • bronchioles
  • bronchi
  • pulmonary capillaries
  • roots of the lungs
  • trachea

Question 45

Question
What is the most common portal of entry for diseases, into the body?
Answer
  • respiratory system
  • endocrine system
  • gastrointestinal system
  • excretory system
  • any opening into the body

Question 46

Question
Hemoglobin gives up oxygen when the environment is more:
Answer
  • acidic
  • alkaline
  • icy
  • open
  • none of the above

Question 47

Question
Acidosis is when you blood pH is below?
Answer
  • 7.05
  • 7.15
  • 7.25
  • 7.35
  • 6.50

Question 48

Question
As blood passes through systemic capillaries:
Answer
  • pH rises
  • HCO3- ions pass from tissues to red blood cells
  • Cl- ion concentration in red cells falls
  • its oxygen dissociation curve shifts to the right
  • its oxygen dissociation curve shifts to the left

Question 49

Question
The carotid bodies:
Answer
  • are stretch receptors in the walls of the intenal carotid arteries
  • have a blood flow per unit volume similar to that in the brain
  • are influenced by the blood temperature
  • generate less afferent impulses when blood H+ concentration rises
  • and the aortic bodies are mainly responsible tor the increased ventilation in hypoxia

Question 50

Question
Pulmonary surfactant increases:
Answer
  • the surface tension of the fluid lining alveolar walls
  • lung compliance
  • in effectiveness as the lungs are inflated
  • in amount when pulmonary blood flow is interrupted
  • the airflow resistance in bronchi

Question 51

Question
As people age, there is usually a decrease in their:
Answer
  • ratio of lung residual volume to vital capacity
  • percentage of vital capacity expelled in one second
  • lung volume level at which small airways start to close during expiration
  • elastic fibers in lungs
  • tidal volume

Question 52

Question
During inspiration:
Answer
  • intrapleural pressure is lowest at mid-inspiration
  • intrapulmonary pressure is lowest around mid-inspiration
  • intraoesophageal pressure is lowest at mid-inspiration
  • the rate of air flow is greatest at end-inspiration
  • the lung volume/intrapleural pressure relationship is the same as in expiration

Question 53

Question
Carbon dioxide:
Answer
  • is carried as carboxyhaemoglobin on the haemoglobin molecule
  • uptake by the blood increases its oxygen-binding power
  • uptake by the blood leads to similar increases in H+ and HCO3- ion concentrations
  • stimulates ventilation when breathed at a concentration of 20 per cent
  • content is greater than oxygen content in arterial blood

Question 54

Question
In normal lungs:
Answer
  • the rate of alveolar ventilation at rest exceeds the rate of alveolar capillary perfusion
  • the ventilation/perfusion (V/Q) ratio in less 0.6 dieting maximal exercise
  • the V/Q ratio is higher at the apex than at the base of the lungs when a person is standing
  • oxygen transfer can be explained by active transport
  • dead space decreases during inspiration

Question 55

Question
Bronchial smooth muscle contractss in response to:
Answer
  • bronchial mucosal irritation
  • local beta adrenoceptor stimulation
  • a fall in bronchial pO2
  • inhalation of air warmed to 37°C
  • circulating noradrenaline

Question 56

Question
In early inspiration there is a fall in:
Answer
  • intrapulmonary pressure
  • aortic pressure
  • intra-abdominal pressure
  • dead space pO2
  • diastolic arterial pressure

Question 57

Question
At a high altitude where atmospheric pressure is halved, there is an increase in:
Answer
  • pulmonary ventilation
  • alveolar H2O vapour pressure
  • arterial pO2
  • intrapleural pressure
  • cerebral blood flow

Question 58

Question
During inspiration:
Answer
  • venous return to the heart is increased
  • less energy is expended than during expiration
  • lung expansion is assisted by surface tension forces in the alveoli
  • lung expansion begins when intrapleural pressure falls below atmospheric
  • the relative concentration of surfactant increases in alveoli

Question 59

Question
The residual volume is:
Answer
  • the gas remaining in the lungs at the end of a full expiration
  • greater on average in women than in men
  • 3-4 litres on average in young adults
  • measured directly using a spirometer
  • smaller in old than in young people

Question 60

Question
A rise in arterial pCO2 leads to:
Answer
  • an increase in ventilation due: to stimulation of peripheral and central chemoreceptors
  • a decrease in ventilation due to stimulation of central and peripheral chemoreceptors
  • a decrease in arterial pressure
  • a decrease in cerebral blood flow
  • a decrease in the plasma bicarbonate level

Question 61

Question
Ventilation increased during:
Answer
  • periods when cerebrospinal fluid pH is reduced
  • compensated chronic renal failure
  • periods when plasma bicarbonate level is raised
  • deep sleep
  • exercise because of the ensuing fall in arterial pO2

Question 62

Question
Pulmonary:
Answer
  • arterial mean pressure is about one-sixth systemic mean arterial pressure
  • blood flow/minute is greater then the systemic blood flow/minute
  • vascular resistance is about 50 per cent that of systemic vascular resistance
  • vascular capacity is similar to systemic vascular capacity
  • arterial pressure increases by about 50 per cent when cardiac output rises by 50 per cent

Question 63

Question
Carbon dioxide is carried in the blood in:
Answer
  • combination with the myoglobin molecule
  • combination with plasma globulins
  • physical solution in red blood cells
  • greater quantity in red blood cells than in plasma
  • greater quantity as HCO3- than as other forms

Question 64

Question
A shift of the oxygen dissociation curve of blood to the right:
Answer
  • occurs m the pulmonary capillaries
  • occurs if blood temperature decreases
  • favors oxygen delivery to the tissues
  • favors oxygen uptake from the lungs by alveolar capillary blood
  • occurs if the pH of the blood increases

Question 65

Question
The compliance of the lungs and chest wall is:
Answer
  • expressed as volume change per unit change in pressure
  • minimal during quiet breathing
  • increased by the surface tension of the fluid lining the alveoli
  • decreased by surfactant
  • changed by parallel displacement of the line relating lung volume to distending pressure

Question 66

Question
Respiratory dead space:
Answer
  • saturates inspired air with water vapour before it reaches the alveoli
  • removes all particles from inspired air before it reaches the alveoli
  • decreases when blood catecholamines levels rise
  • decreases during a deep inspiration
  • is equal to the tidal volume

Question 67

Question
Vital capacity is:
Answer
  • the volume of air expired from full inspiration to full expiration
  • increased as one grows older
  • greater in women than in men of the same age and height
  • related more to total body mass than to lean body mass
  • the sum of the inspiratory and expiratory reserve volumes

Question 68

Question
Oxygen debt is:
Answer
  • the amount of O2 consumed after cessation of exercise
  • incurred because the pulmonary capillary walls limit 02 uptake during exercise
  • possible since skeletal muscle can function temporarily without oxygen
  • associated with a decrease in blood lactate
  • associated with metabolic alcalosis

Question 69

Question
The CO2 dissociation curve for whole blood shows that:
Answer
  • its shape is sigmoid
  • blood saturates with CO2 when pCO2 exceeds normal alveolar levels
  • blood contains some CO2 even when the pCO2 is zero
  • oxygenation of the blood drives CO2 out of the blood
  • adding CO2 to the blood drives 02 out of the blood

Question 70

Question
Bronchial asthma is likely to be relieved by:
Answer
  • stimulation of cholinergic receptors
  • stimulation of beta adrenoceptors
  • histamine aerosols
  • non steroidal anti-inflammatory drugs
  • mineralcorticoids

Question 71

Question
Air in the pleural cavity (pneumothorax):
Answer
  • allows intrapleural pressure to rise to atmospheric pressure
  • causes the underlying lung to collapse by compressing it
  • increases the functional residual capacity
  • leads to a slight inward movement of the chest wall
  • increases the vital capacity

Question 72

Question
Loss of pulmonary elastic tissue in ‘emphysema’ reduces:
Answer
  • physiological dead space
  • the surfactant
  • residual volume
  • vital capacity
  • the intrapleural pressure

Question 73

Question
Complete obstruction of a major bronchus usually results in:
Answer
  • collapse of the alveoli supplied by the bronchus
  • a rise in local intrapleural pressure
  • an increase in physiological dead space
  • an increase in blood flow to the lung tissue supplied by the bronchus
  • cyanosis

Question 74

Question
A shift of the oxygen dissociation curve of blood to the left:
Answer
  • decreases the O2 content of blood at a given pO2
  • impairs O2 delivery to the tissues at the normal tissue pO2
  • occurs in blood perfusing hot extremities
  • occurs in blood with lower pH than with higher pH
  • is characteristic of adult blood when compared with fetal blood

Question 75

Question
A diver breathing air at a depth of 30 metres under water:
Answer
  • is exposed to a pressure equal to that at the surface
  • has a raised pressure of nitrogen in the alveoli
  • has a four-fold increase in the oxygen content of blood
  • has a fourfold increase in alveolar water vapour pressure
  • expends less energy than manna! on the work of breathing

Question 76

Question
Cyanosis:
Answer
  • may be caused by high levels of carboxyhaemoglobin in the blood
  • may be caused by high levels of methaemoglobin in the blood
  • is seen in fingers of hands immersed in iced water
  • occurs more easily in anaemic than in polycythaemic patients
  • is severe in cyanide poisoning

Question 77

Question
A patient with carbon dioxide retention is likely to have:
Answer
  • metabolic acidosis
  • alkaline urine
  • cool extremeties
  • decreased cerebral blood flow
  • raised plasma bicarbonate

Question 78

Question
Coughing:
Answer
  • is reflexly initiated by irritation of the alveoli
  • is associated with relaxation of airways smooth muscle
  • depends on contraction of the diaphragm for expulsion of air
  • differs from sneezing in that the glottis is initially closed
  • is equivalent of sneezing

Question 79

Question
The severity of an obstructive airways disease is indicated by the degree of change in the:
Answer
  • total ventilation/perfusion ratio
  • peak expiratory flow rate
  • respiratory quotient
  • tidal volume
  • dead space

Question 80

Question
A 50% fall in the ventilation/perfusion (V/Q) ratio in one lung would:
Answer
  • lower systemic arterial oxygen content
  • has no effect on the O2 in systemic circulation
  • increase the physiological dead space
  • lower systemic arterial carbon dioxide content
  • be compensated (with respect to oxygen uptake) by a high ratio in the other lung

Question 81

Question
The total amount of O2 carried by the circulation to the tissues/min. (oxygen delivery or total available oxygen):
Answer
  • normally equals the rate of O2 consumption by the body/min
  • is normally more than 95 per cent combined with haemoglobin
  • must fall by about half if haemoglobin concentration is halved
  • is more closely related to PO2 than to percentage saturation of the blood with O2
  • must double if body oxygen consumption doubles

Question 82

Question
For air to enter the lungs during inspiration
Answer
  • the pressure inside the lungs must be higher than the atmospheric pressure
  • the pressure inside the lungs must become lower than the atmospheric pressure
  • the pressure inside the lungs must be equal to the atmospheric pressure
  • the diaphragm must be relaxed
  • the external intercostal muscles must be relaxed

Question 83

Question
Given: CO2 + H2O <--> H2CO3 <--> HCO3- + H+, what happens if bicarbonate ions are increased?
Answer
  • more carbon monoxide produced
  • more bicarbonate ions produced
  • an increase in protons
  • there would be a shift to the left
  • there would be a shift to the right first, then to the left

Question 84

Question
The values (mm Hg) for pCO2 and pO2 in the interstitial spaces of peripheral tissues are approximately:
Answer
  • 60; 40
  • 40; 60
  • 46; 40
  • 66; 46
  • 46; 100

Question 85

Question
If forcefully exhaling as much air as possible after a normal breath this is:
Answer
  • tidal volume
  • expiratory reserve volume
  • maximum expiratory flow rate
  • eupnea
  • inspiratory reserve volume

Question 86

Question
Which of the following reactions takes place in the systemic capillaries (where CO2 is greater and O2 is less)?
Answer
  • Hb + O2 -> HbO2
  • Hb + CO2 -> HbCO2
  • HbCO2 -> Hb + CO2
  • H2CO3 -> HCO3- + H+
  • Na+ + HCO3- -> NaHCO3

Question 87

Question
Water molecules on the surface of the alveoli generate surface tension; this force;
Answer
  • inhibits alveolar collapse
  • assists pulmonary compliance
  • assists elastic recoil
  • resists elastic recoil
  • impairs gas exchange

Question 88

Question
What does the ventral respiratory group within the medulla oblongata do?
Answer
  • triggers inspiration
  • decreased ventilation rate
  • nothing
  • for forced breathing
  • inhibits apneustic center, sets limits to over inflation of lungs

Question 89

Question
The region in the brain that sets the limit for over-inflation of lungs is located in the:
Answer
  • pons
  • apneustic center
  • arterial blood chemistry
  • medulla oblongata
  • stretch receptors

Question 90

Question
In Caissons disease pain in the joints and muscles is due to:
Answer
  • formation of N2 bubbles
  • formation of CO2 bubbles
  • due to fatigue
  • due to increase in barometric pressure
  • formation of O2 bubbles

Question 91

Question
Normal value of FEV in an adult is:
Answer
  • 95%
  • 80%
  • 65%
  • 50%
  • 40%

Question 92

Question
The most important gas maintaining alveolar ventilation is:
Answer
  • oxygen
  • hydrogen
  • carbon dioxide
  • N2
  • CO

Question 93

Question
Hyperbaric oxygen is useful in all except:
Answer
  • congenital heart disease
  • gas gangrene
  • CO poisoning
  • N2 toxicity
  • advanced pulmonary carcinoma

Question 94

Question
As one ascends to higher than 3000 meters above sea level changes in alveolar pO2 and pCO2 are as follows:
Answer
  • decrease in pO2, increase in pCO2
  • decrease in pO2, decrease in pCO2
  • increase in both pO2 and pCO2
  • increase in pO2, decrease in pCO2
  • no change in pO2 and pCO2

Question 95

Question
Surfactant is secreted by:
Answer
  • type 1 pneumatocytes
  • type 2 pneumatocytes
  • goblet cells
  • pulmonary vessels
  • bronchial smooth muscle cells

Question 96

Question
Which of the following effects is not observed during prolonged stay is space:
Answer
  • decrease in blood volume
  • decrease in muscle strength
  • increase in red cell mass
  • loss of bone mass
  • osteroporosis

Question 97

Question
Airway resistance:
Answer
  • increases in asthma
  • decreases in emphysema
  • increases in paraplegic patients
  • does not affect work of breathing
  • decreases in asthma

Question 98

Question
Decreases on pCO2, decrease in H+ and increased pO2 causes:
Answer
  • hyperventilation
  • hypoventilation
  • hypercapnoea
  • hypoxia
  • none of the above

Question 99

Question
The intrapleural pressure at the end of deep inspiration is:
Answer
  • -4 mm Hg
  • +4 mm Hg
  • -6 mm Hg
  • +6 mm Hg
  • -10 mm Hg

Question 100

Question
Exercise which doubles the metabolic rate is likely to at least double the:
Answer
  • oxygen consumption
  • cardiac output
  • stroke volume
  • arterial pCO2
  • ventilation/perfusion ratio

Question 101

Question
Sudden complete obstruction of the respiratory tract causes:
Answer
  • a fall in blood pressure
  • stimulation of central chemoreceptors
  • cianosis
  • increased breathing
  • constriction of the pupils

Question 102

Question
The effects of moving from sea level to an altitude of 5000 metres include an increase in:
Answer
  • alveolar ventilation
  • blood bicarbonate level
  • appetite for food
  • exercise tolerance
  • muscle strength
Show full summary Hide full summary

Want to create your own Quizzes for free with GoConqr? Learn more.

Similar

Epithelial tissue
Morgan Morgan
Photosynthesis and Respiration
Jessica Phillips
Epidemiology
Danielle Richardson
History of Medicine: Ancient Ideas
James McConnell
Laboratory Tools
Christopher Nikolo R. Magtoto
4. The Skeletal System - bones of the skull
t.whittingham
Neuro anatomy
James Murdoch
Renal System A&P
Kirsty Jayne Buckley
The Endocrine System
DrABC
Medical Terminology
khachoe_pema
Respiratory anatomy
James Murdoch
Browse Library