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Anatomy and Physiology 2 > Heart > Flashcards

Heart Flashcards

1
Q

Double-walled sac that encloses the heart

A

Pericardium

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2
Q

Deep to the pericardium

A

Serous Pericardium

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3
Q

Lines the inside of the pericardiym

A

Parietal pericardium

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4
Q

Covers the surface of the heart

A

Epicardium

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5
Q

Composed mainly of cardiac muscle and forms the bulk of the heart

A

Myocardium

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6
Q

Lines the chambers of the heart

A

Endocardium

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7
Q

Receiving chambers of the heart

A

Right and let atria

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8
Q

Pumps blood into the pulmonary trunk

A

Right ventricle

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9
Q

Pumps blood into the aorta

A

Left ventricle

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10
Q

Pumps blood into the pulmonary circuit

A

Right side of the heart

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11
Q

Pumps blood into the systematic circuit

A

Left side of the heart

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12
Q

Provides the blood supply for the heart cells

A

Coronary circulation

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13
Q

Prevent backflow into the atria when the ventricles contract

A

Tricuspid and mitral valves

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14
Q

AV Valves are open

A

heart is relaxes

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15
Q

AV valves are closed

A

heart is contracting

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16
Q

Prevent backflow of blood into the ventricles

A

Aortic and pulmonary valves

17
Q

Aortic and pulmonary valves are closed

A

Heart is relaxed

18
Q

Aortic and pulmonary valves are opened

A

Heart is contracting

19
Q

Made up of specialized cardiac cells that initiate and distribute impulses ensuring that the heart depolarizes in an orderly fashion

A

Intrinsic conduction system

20
Q

Unstable resting potential that continuously depolarizes

A

Autorhythmic cells

21
Q

Increases rate and depth of the heartbeat

A

Sympathetic center

22
Q

Slows heartbeat

A

Parasympathetic center

23
Q

Monitors and amplifies the electrical signals of the heart and records it as an electrocardiogram

A

Electrocardiograph

24
Q

The first heart sound

A

lub

25
Q

The second heart sound

A

Dup

26
Q

Extraneous heart sounds due to turbulent backflow of blood through a valve that does not close tightly

A

Heart murmurs

27
Q

Contractile phase of the cardiac cycle

A

Systole

28
Q

Relaxation stage of the cardiac cycle

A

Diastole

29
Q

The amount of blood pumped out a ventricle per beat

A

Cardiac output

30
Q

The frank-starling law of the heart states that the critical factor controlling stoke volume is the degree of stretch of cardiac mucle cells immediately before they contract

A

Preload

31
Q

Contractile strength increases if there is an increase in cytoplasmic calcium ion concentration

A

Contractility

32
Q

Ventriclar pressure that must be ovecome before blood can be ejected from the heart

A

Afterload

33
Q

When one side of the heart fails

A

Pulmonary congestion

Anatomy and Physiology 2 (9 decks)

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