Topic 3: Heart and Circulatory Flashcards

(105 cards)

1
Q

Heart Location

A

Located in the thoracic cavity, mediastinum, slightly left of midline, between lungs.

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2
Q

Heart Body Cavity

A

Pericardial cavity, a subdivision of the thoracic cavity.

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3
Q

Parietal Pericardium

A

Outer fibrous layer of the pericardium enclosing the heart.

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4
Q

Epicardium (Visceral Pericardium)

A

Inner layer of pericardium, adhering to heart surface.

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5
Q

Functions of the Heart

A

Pumps blood, delivers oxygen/nutrients (systemic circuit), facilitates lung gas exchange (pulmonary circuit).

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6
Q

Pulmonary Circuit

A

Blood from right ventricle to lungs via pulmonary arteries, oxygenated, returns to left atrium via pulmonary veins.

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7
Q

Systemic Circuit

A

Blood from left ventricle to body via aorta/arteries, deoxygenated blood returns to right atrium via veins.

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8
Q

Superior Vena Cava

A

Large vein carrying deoxygenated blood from upper body to right atrium.

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9
Q

Inferior Vena Cava

A

Large vein carrying deoxygenated blood from lower body to right atrium.

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10
Q

Pulmonary Trunk

A

Artery carrying deoxygenated blood from right ventricle to lungs.

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11
Q

Pulmonary Arteries

A

Branches of pulmonary trunk carrying blood to lungs.

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12
Q

Pulmonary Veins

A

Veins carrying oxygenated blood from lungs to left atrium.

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13
Q

Ascending Aorta

A

Initial aortic portion carrying oxygenated blood from left ventricle.

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14
Q

Right Atrium

A

Receives deoxygenated blood from the body.

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15
Q

Right Ventricle

A

Pumps deoxygenated blood to the lungs.

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16
Q

Left Atrium

A

Receives oxygenated blood from the lungs.

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17
Q

Left Ventricle

A

Pumps oxygenated blood to the body.

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18
Q

Tricuspid Valve

Also called the Right Atrioventricular Valve (Right AV)

A

Prevents backflow from right ventricle to right atrium.

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19
Q

Bicuspid Valve

Also called the Mitral Valve, or Left Atrioventricular Valve (Left AV)

A

Prevents backflow from left ventricle to left atrium.

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20
Q

Pulmonary Semilunar Valve

Also called the Pulmonary Valve

A

Prevents backflow from pulmonary trunk to right ventricle.

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21
Q

Aortic Semilunar Valve

Also called the aortic valve

A

Prevents backflow from aorta to left ventricle.

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22
Q

Endocardium

A

Innermost heart layer, smooth endothelial cells in contact with blood.

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23
Q

Myocardium

A

Middle, muscular heart layer responsible for contraction.

Image only highlighting myocardium slice of left ventricle.

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24
Q

Right Auricle

A

Ear-like flap of right atrium, increases capacity.

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25
Left Auricle
Ear-like flap of left atrium, increases capacity.
26
Right Coronary Artery
Supplies blood to right side of heart.
27
Right Marginal Artery
Branch of right coronary artery supplying right ventricle.
28
Left Coronary Artery
Supplies blood to left side of heart.
29
Circumflex Artery
Branch of left coronary artery supplying left atrium/ventricle.
30
Anterior Interventricular Artery
Supplies interventricular septum and anterior ventricle walls.
31
Great Cardiac Vein
Drains anterior heart blood into coronary sinus.
32
Ligamentum Arteriosum
Remnant of fetal ductus arteriosus, connects pulmonary artery to aorta.
33
Posterior Interventricular Artery
Branch of right coronary artery supplying posterior septum.
34
Coronary Sinus
Large vein collecting blood from cardiac veins, empties into right atrium.
35
Middle Cardiac Vein
Drains posterior heart into coronary sinus.
36
Fossa Ovale
Oval depression in right atrium, remnant of fetal foramen ovale.
37
Pectinate Muscles
Muscular ridges in right atrium, increase contractility.
38
Interventricular Septum
Wall separating right and left ventricles.
39
Papillary Muscle
Muscles in ventricles anchoring chordae tendineae.
40
Chordae Tendineae
Tendons connecting papillary muscles to AV valve cusps.
41
Trabeculae Carneae
Muscular ridges in ventricles, aid contraction.
42
Arteries
Carry blood away from heart, thick-walled with elastic/muscular layers.
43
Capillaries
Thin-walled vessels for gas/nutrient exchange, throughout tissues, not visible on cadavers.
44
Veins
Carry blood toward heart, thinner-walled with valves.
45
Pulse
Rhythmic artery expansion from heartbeats, palpated at radial, carotid, brachial, femoral, dorsalis pedis.
46
Blood Pressure
Force of blood against artery walls, measured with sphygmomanometer, reported as systolic/diastolic.
47
Artery Structure
Thick tunica media, narrow lumen, no valves.
48
Vein Structure
Thinner tunica media, wider lumen, contains valves.
49
Tunica Intima
Endothelium layer, similar in arteries and veins.
50
Tunica Media
Thicker in arteries (more muscle/elastic tissue), thinner in veins.
51
Tunica Externa
Thicker in veins (collagen for support), thinner in arteries.
52
Artery Blood Direction
Carries blood away from the heart.
53
Vein Blood Direction
Carries blood toward the heart.
54
Aortic Arch
Curved portion of the aorta.
55
Descending Aorta
Aorta extending downward, thoracic and abdominal segments.
56
Brachiocephalic Trunk
First aortic arch branch, splits into right subclavian/carotid.
57
Subclavian Artery
Supplies upper limb and parts of head.
58
Common Carotid Artery
Supplies head and neck.
59
Internal Carotid Artery
Supplies the brain.
60
External Carotid Artery
Supplies face and scalp.
61
Celiac Trunk
Supplies stomach, liver, spleen.
62
Left Gastric Artery
Supplies the stomach.
63
Splenic Artery
Supplies the spleen.
64
Common Hepatic Artery
Supplies the liver.
65
Superior Mesenteric Artery
Supplies small intestine, part of large intestine.
66
Renal Arteries
Supply the kidneys.
67
Gonadal Arteries
Supply testes or ovaries.
68
Inferior Mesenteric Artery
Supplies lower large intestine.
69
Common Iliac Artery
Bifurcates into internal/external iliac arteries.
70
Internal Iliac Artery
Supplies the pelvis.
71
External Iliac Artery
Supplies the lower limb.
72
Femoral Artery
Major artery of the thigh.
73
Axillary Artery
Continuation of subclavian in armpit.
74
Brachial Artery
Supplies the upper arm.
75
Radial Artery
Supplies forearm and hand (lateral).
76
Ulnar Artery
Supplies forearm and hand (medial).
77
Vertebral Artery
Supplies posterior brain.
78
Basilar Artery
Formed by vertebral arteries, supplies brainstem.
79
Posterior Communicating Artery
Connects posterior cerebral to internal carotid.
80
Middle Cerebral Artery
Supplies lateral brain.
81
Anterior Communicating Artery
Connects anterior cerebral arteries.
82
Anterior Cerebral Artery
Supplies medial brain.
83
Posterior Cerebral Artery
Supplies occipital lobe and cerebellum.
84
Brachiocephalic Vein
Drains upper limb/head into superior vena cava.
85
External Jugular Vein
Drains scalp and face.
86
Internal Jugular Vein
Drains brain and head.
87
Subclavian Vein
Drains the upper limb.
88
Great Saphenous Vein
Drains the leg, used in bypass surgery.
89
Femoral Vein
Drains the thigh.
90
Common Iliac Vein
Formed by internal/external iliac veins.
91
Internal Iliac Vein
Drains the pelvis.
92
External Iliac Vein
Drains the lower limb.
93
Gonadal Veins
Drain testes or ovaries.
94
Renal Veins
Drain the kidneys.
95
Splenic Vein
Drains the spleen.
96
Inferior Mesenteric Vein
Drains lower large intestine.
97
Superior Mesenteric Vein
Drains small intestine.
98
Hepatic Portal Vein
Carries nutrient-rich blood from gut to liver.
99
Axillary Vein
Drains the armpit.
100
Cephalic Vein
Drains lateral arm.
101
Basilic Vein
Drains medial arm.
102
Median Cubital Vein
Connects cephalic/basilic veins, used for blood draws.
103
Brachial Veins
Drain the upper arm.
104
Ulnar Veins
Drain medial forearm.
105
Radial Veins
Drain lateral forearm.