Pregunta 1
Pregunta
Describe the position of the heart within the mediastinum
Respuesta
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thoracic cavity
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pleural cavity
Pregunta 2
Pregunta
Select Three functions of the CVS
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• Assists the production of the digestive and absorbtion system
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• Transports fluids, nutrients, waste products, gases, and hormones throughout the body.
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• Exchange materials between blood, cells and extracellular fluid.
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• Plays a role in the immune response, blood pressure and the regulation of body temperature.
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• Maintains optimal body temperature
Pregunta 3
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Select Four components which comprise of the CVS
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heart
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blood
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capillary beds
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blood vessels
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lungs
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larynx
Pregunta 4
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Select Five components the CVS transports
Respuesta
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fluids
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hormones
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gases
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waste products
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nutrients
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urine
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chyne
Pregunta 5
Pregunta
Select Five functions of the Heart
Respuesta
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• Generating blood pressure – moves blood through vessels
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• Changes to match need ie. exercise, sleeping
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• Regulating blood supply
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• Ensuring one-way blood flow
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• Routing blood: separates pulmonary and systemic circulations
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• Regulates hormones
Pregunta 6
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The Heart – 2 pumps in 1 which are: (select two)
Respuesta
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Coronal circulation
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Systemic circulation
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Pulmonary circulation
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Adrenal circulation
Pregunta 7
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The shape of the heart consists of:
[blank_start]Apex[blank_end]: Blunt rounded point of cone
[blank_start]Base[blank_end]: Flat part at opposite of end of cone
Pregunta 8
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The [blank_start]pericardial[blank_end] sac has two layers, a [blank_start]serous[blank_end] layer and a [blank_start]fibrous[blank_end] layer. It encloses the pericardial cavity which contains [blank_start]pericardial[blank_end] fluid.
Respuesta
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pericardial
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myocardium
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serous
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parietal
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fibrous
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phrenic
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pericardial
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plasma
Pregunta 9
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The [blank_start]Serous[blank_end] portion of Pericardium, consists of [blank_start]two[blank_end] layers, [blank_start]visceral[blank_end] and [blank_start]parietal[blank_end]. The space between the layers is the pericardial cavity.
Respuesta
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Serous
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Fibrous
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two
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three
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visceral
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inner
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parietal
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myocardial
Pregunta 10
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The Visceral Serous pericardium is situated to the [blank_start]Myocardium[blank_end] of the Heart.
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Myocardium
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Epicardium
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Endocardium
Pregunta 11
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Walls of the Heart:
Three layers of tissue -
1. [blank_start]Epicardium[blank_end] : Serous membrane; smooth outer surface of heart
2. [blank_start]Myocardium[blank_end] : Middle layer composed of cardiac muscle cells – contractility
3. [blank_start]Endocardium[blank_end] : Smooth inner surface of heart chambers
Respuesta
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Epicardium
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Myocardium
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Endocardium
Pregunta 12
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The Endocardium is the smooth inner surface of heart chambers
Pregunta 13
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[blank_start]Pectinate muscles[blank_end] : muscular ridges in auricles and right atrial wall
[blank_start]Trabeculae carnae[blank_end] : muscular ridges and columns on inside walls of ventricles
Respuesta
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Pectinate muscles
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Trabeculae carnae
Pregunta 14
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Trabeculae carnae: muscular ridges and columns on inside walls of ventricles
Pregunta 15
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Pectinate muscles: muscular ridges in auricles and right atrial wall
Pregunta 16
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Pectinate muscles: muscular ridges and columns on inside walls of ventricles
Pregunta 17
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Walls of the Heart Diagram:
1. [blank_start]Simple Squamous Epithelium[blank_end]
2. [blank_start]Loose connective and adipose tissue[blank_end]
3. [blank_start]Epicardium (Visceral)[blank_end]
4. [blank_start]Myocardium[blank_end]
5. [blank_start]Endocardium[blank_end]
6. [blank_start]Trabeculae carneae[blank_end]
Pregunta 18
Pregunta
The Heart chambers:
[blank_start]Atrioventricular canals[blank_end]: openings between atria and respective ventricles
[blank_start]Right ventricle[blank_end]: opens to pulmonary trunk
[blank_start]Left ventricle[blank_end]: opens to aorta – very muscular wall.
[blank_start]Interventricular septum[blank_end]: between the two ventricles.
Respuesta
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Atrioventricular valves
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Right ventricle
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Left ventricle
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Interventricular septum
Pregunta 19
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Right ventricle: opens to pulmonary trunk
Pregunta 20
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Atrioventricular valves: openings between atria and their respective ventricles
Pregunta 21
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Left ventricle: opens to aorta – very muscular wall
Pregunta 22
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Blood Vessels - overview.
[blank_start]Arteries[blank_end] :
Elastic, Muscular, Arterioles
Take blood away from the heart
Contain blood under pressure
[blank_start]Capillaries[blank_end] :
site of exchange with tissues (interstitial fluid)
[blank_start]Veins[blank_end] :
Large, medium, small, venules
Take blood to the heart
Thinner walls than arteries, contain less elastic tissue less
smooth muscle
Valves to prevent backflow
Respuesta
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Arteries
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Capillaries
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Veins
Pregunta 23
Pregunta
Blood vessel diagram:
1. [blank_start]Tunica Adventitia[blank_end]
2. [blank_start]Tunica Media[blank_end]
3. [blank_start]Tunica Intima[blank_end]
Respuesta
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Tunica Adventitia
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Tunica Media
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Tunica Intima
Pregunta 24
Pregunta
Blood Vessels – arteries & veins:
- [blank_start]Tunica intima[blank_end]: Endothelium
- [blank_start]Tunica media[blank_end]: smooth muscle cells arranged circularly around the blood vessel.
- [blank_start]Vasoconstriction[blank_end]: smooth muscles contract, decrease in blood flow
- [blank_start]Vasodilation[blank_end]: smooth muscles relax, increase in blood flow
- [blank_start]Tunica externa (adventitia)[blank_end]: connective tissue
Pregunta 25
Pregunta
Select Five functions of blood
Respuesta
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Clot formation
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Protection against foreign substances
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Maintenance of body temperature
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Regulation of pH and osmosis (normal pH 7.4)
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Transport: gases, nutrients, waste products, processed molecules, hormones, enzymes
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Absorption of nutrients
Pregunta 26
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Blood consists of [blank_start]55%[blank_end] Plasma and [blank_start]45%[blank_end] formed elements
Pregunta 27
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Plasma consists of [blank_start]7%[blank_end] Proteins, [blank_start]91%[blank_end] Water and [blank_start]2%[blank_end] Other solutes
Pregunta 28
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The Proteins in Plasma consist of (select Three)
Respuesta
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Albumins 58%
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Globulins 38%
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Fibrinogen 4%
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Neutrophils 4%
Pregunta 29
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Other solutes in Blood consist of (select Five)
Respuesta
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Ions
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Nutrients
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Waste products
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Gases
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Regulatory substances
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Globulins
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Neutrophils
Pregunta 30
Pregunta 31
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Cardiac cycle –
[blank_start]Systole[blank_end] - contraction of the ventricles, causes the ejection of blood into the aorta and pulmonary trunk
[blank_start]Diastole[blank_end] – when the heart muscle relaxes and allows the chambers to fill with blood, to refill each atrium and each ventricle
Pregunta 32
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Stroke volume - the volume of blood pumped from the left ventricle in one contraction
Pregunta 33
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The heart [blank_start]can[blank_end] generate it’s own action potentials.
Pregunta 34
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The Sinoatrial node (SA) node is the heart's natural pacemaker. The SA node consists of a cluster of cells that are situated in the upper part of the wall of the [blank_start]right atrium[blank_end].
Pregunta 35
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[blank_start]Atrioventricular node[blank_end]: The electrical relay station between the upper and lower chambers of the heart. The [blank_start]AV[blank_end] node, which controls the heart rate, sends electrical signals from the atria which must pass through the [blank_start]AV[blank_end] node to reach the ventricles.
Respuesta
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Atrioventricular node
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Sinoatrial node
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AV
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SA
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AV
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SA
Pregunta 36
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The mode of Capillary exchange is via [blank_start]Diffusion[blank_end]
Pregunta 37
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Left Atrium: one of the four chambers of the heart, located on the left posterior side. Its primary roles are to act as a holding chamber for blood returning from the lungs
Pregunta 38
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Right atrium: one of the four chambers of the heart, located on the left posterior side. Its primary roles are to act as a holding chamber for blood returning from the lungs
Pregunta 39
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Deoxygenated blood enters the right atrium through the inferior and superior vena cava.
Pregunta 40
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Deoxygenated blood enters the left atrium through the inferior and superior vena cava.
Pregunta 41
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The Fibrous pericardium: tough fibrous outer layer, prevents over distention; acts as anchor.
Pregunta 42
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Serous pericardium: thin, transparent, inner layer, simple squamous epithelium.
- Parietal pericardium: lines the fibrous outer layer
- Visceral pericardium: covers heart surface
Pregunta 43
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Serous pericardium: thin, transparent, inner layer, simple squamous epithelium.
- Visceral pericardium: lines the fibrous outer layer
- Parietal pericardium: covers heart surface
Pregunta 44
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The aortic valve is a valve in the human heart between the left ventricle and the aorta.
Pregunta 45
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The bicuspid valve is a valve in the human heart between the left ventricle and the aorta.
Pregunta 46
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The pulmonic valve is one of two valves that allow blood to leave the heart via the arteries. It is located in the right ventricle of the heart.
Pregunta 47
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The tricuspid valve forms the boundary between the right ventricle and the right atrium.
Pregunta 48
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The tricuspid valve forms the boundary between the left ventricle and the left atrium.
Pregunta 49
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The bicuspid valve is situated between the left atrium and the left ventricle.
Pregunta 50
Pregunta
REMEMBER THIS FOR VALVES: This Assists Pushing Blood (from left to right)
Pregunta 51
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Valves of the Heart:
1. [blank_start]Tricuspid[blank_end]
2. [blank_start]Aortic Semilunar[blank_end]
3. [blank_start]Pulmonary[blank_end]
4. [blank_start]Bicuspid[blank_end]
Respuesta
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Tricuspid
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Aortic Semilunar
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Pulmonary
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Bicuspid
Pregunta 52
Pregunta
What is number 1 on the diagram?
Respuesta
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Tricuspid valve
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Aortic semilunar valve
Pregunta 53
Pregunta
What is number 2 on the diagram?
Respuesta
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Aortic semilunar valve
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Tricuspid valve
Pregunta 54
Pregunta
What is number 3 on the diagram?
Pregunta 55
Pregunta
What is number 4 on the diagram?
Pregunta 56
Pregunta
The pectinate muscles (musculi pectinati) are parallel ridges in the walls of the atria of the heart.
Pregunta 57
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Tunica External is the external layer of the artery wall
Pregunta 58
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The SA node is the heart's natural pacemaker. The SA node consists of a cluster of cells that are situated in the upper part of the wall of the right atrium
Pregunta 59
Pregunta
The NV node is the heart's natural pacemaker. The NV node consists of a cluster of cells that are situated in the upper part of the wall of the right atrium
Pregunta 60
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The AV node, which controls the heart rate, is one of the major elements in the cardiac conduction system. The AV node serves as an electrical relay station, slowing the electrical current sent by the sinoatrial (SA) node before the signal is permitted to pass down through to the ventricles.
Pregunta 61
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Tunica externa (adventitia): connective tissue
Pregunta 62
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Tunica intima: smooth muscle cells arranged circularly around the blood vessel.
Pregunta 63
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Tunica media: Endothelium