ANATOMY OF THE HEART Flashcards

1
Q

A closed system of the heart and blood vessels

A

Cardiovascular system

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2
Q

The heart is located in the ___, between the lungs in the inferior mediastinum

A

Thoracic cavity

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3
Q

directed toward left hip and rests on the diaphragm

A

Apex

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4
Q

points toward right shoulder

A

Base

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5
Q

Which ribs is the heart enclosed in?

A

2nd to 5th rib

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6
Q

The loudest heart sound can be found at the

A

PMI (point of maximal intensity)

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7
Q

The PMI can be found where?

A

left midclavicular line, 5th intercostal space

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8
Q

double walled sac that encloses the heart

A

Pericardium

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9
Q

loosely fitting superficial part; helps protect the heart and anchors it to surrounding structures, such as the diaphragm and sternum

A

Fibrous pericardium

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10
Q

slippery, two-layer deep into the fibrous pericardium

A

Serous pericardium

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11
Q

lines the interior of the fibrous pericardium

A

Parietal pericardium

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12
Q

innermost layer of the pericardium and the outermost layer of the heart wall

A

Visceral pericardium

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13
Q

Other name for visceral pericardium?

A

Epicardium

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14
Q

consists of thick bundles of cardiac muscle twisted and whorled into ringlike arrangements; layer that actually contracts

A

Myocardium

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15
Q

is a thin, glistening sheet of endothelium that lines the heart chambers

A

Endocardium

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16
Q

Which ventricle forms most of the heart’s anterior surface?

A

Right ventricle

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17
Q

septum that divides the heart longitudinally, or the atria

A

Interatrial septum

18
Q

divides the ventricles

A

Interventricular septum

19
Q

Which side works as the pulmonary circuit pump?

A

Right

20
Q

receives oxygen-poor blood from the veins of the body and pumps it out through the pulmonary trunk

A

large superior vena cava and inferior vena cava

21
Q

carry oxygen-poor blood to the lungs, where it will be oxygenated

A

Pulmonary artery

22
Q

receives the oxygen-rich blood which was drained from the lungs

A

Pulmonary veins

23
Q

The left side of the heart works as the ___ circuit pump

A

Systemic

24
Q

where the oxygenated blood is returned and flows into the left ventricle

A

Left atrium

25
Q

branch that supplies the oxygenated blood to the tissues

A

Aorta

26
Q

where oxygen-poor blood passes through to be circulated back to the right atrium

A

Systemic veins

27
Q

allow blood to flow in only one direction through the heart chambers

A

Heart valves

28
Q

are located between the atria and ventricles on each side; prevent backflow into the atria when the ventricles contract

A

Atrioventricular (AV) valves

29
Q

consists of two flaps, or cusps, of endocardium

A

Bicuspid valve (mitral)

30
Q

has three cusps that anchor the cusps to the walls of the ventricles

A

Tricuspid valve

31
Q

When the heart is relaxed, the AV valve cusps are

A

Opened

32
Q

As the ventricles contract, the AV valve cusps are forced upwards, causing it to

A

Close

33
Q

What anchors the cusps in a closed position during contraction?

A

Chordae tendinae

34
Q

guards the bases of the two large arteries leaving the ventricular chambers

A

Semilunar valves

35
Q

Two types of semilunar valves

A

pulmonary and aortic

36
Q

When the ventricles are contracting, the cusps in the semilunar valves are

A

open

37
Q

When the ventricles relax, the cusps in the semilunar valves are

A

Closed

38
Q

True or false: Blood in the heart nourishes the myocardium

A

False. The heart has its own nourishing circulatory system

39
Q

branch from the aorta to supply the heart muscle with oxygenated blood

A

Coronary arteries

40
Q

drain the myocardium of blood

A

Cardiac veins

41
Q

a large vein on the posterior of the heart; receives blood from cardiac veins

A

Coronary sinus