chapter 15 Flashcards

0
Q

valve between the right atrium and right ventricle

A

tricuspid valve

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1
Q

valve between the left atrium and right ventricle

A

bicuspid/mitral valve

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2
Q

chamber that pumps blood to the lungs

A

right ventricle

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3
Q

chamber that pumps blood into the aorta

A

left ventricle

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4
Q

chamber that receives oxygenated blood from lungs

A

left atrium

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5
Q

chamber that receives deoxygenated blood from the body

A

aortic valve

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6
Q

valve between the right ventricle and pulmonary trunk

A

pulmonary valve

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7
Q

valve between the left ventricle and aorta

A

aortic valve

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8
Q

pericardium

A

membrane that surrounds and protects the heart

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9
Q

superior vena cava

A

blood vessel that delivers deoxygenated blood from the head and neck to the heart

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10
Q

“pacemaker”

A

sinoatrial (SA) node

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11
Q

Arteriees and veins arise from this portion of thee heart

A

base

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12
Q

This ventrical pumps blood to the lungs

A

right ventricle

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13
Q

heart attack

A

myocardial infarction

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14
Q

P wave represents this event

A

atrial depolarization followed by systole

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15
Q

the first heart sound ( lubb ) us caused by closure of these valves.

A

AV valve

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16
Q

parts of the pericardium

A

fibrous and serous

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17
Q

outermost layer of pericardium

A

fibrous

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18
Q

layer of the pericardium adjacent to the heart muscle

A

viceral

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19
Q

when the atria are in systole the ventricles are in

A

diastole

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20
Q

when the ventricles are in systole the AV valves are

A

closed

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21
Q

heart valves

A

prevent the backflow of blood

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22
Q

the T wave

A

repolarization

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23
Q

venous blood (without oxygen) from the body returns to this chamber

A

right atrium

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24
Q

hardening of the arteries

A

arthersclerosis

25
Q

condition caused by reduced blood flow to the myocardium

A

myocardial ischemiec

26
Q

irregular heart rhythm

A

arrhythmia

27
Q

opening in the septum between the atria and fetus

A

foramen ovale

28
Q

narrowing of a valve opening by scar tissue

A

stenosis

29
Q

different areas of the heart beating independently

A

fibrillation

30
Q

narrowing of the coronary arteries reducing blood flow to the heart; has a number of causes and is the leading cause of death in the us

A

coronary artery disease

31
Q

the term epicardium refers to this structure

A

over the heart wall

32
Q

circulation of the blood through the heart muscle is supplied by the …..

A

coronary cirulation

33
Q

cardiac muscle is known as

A

myocardium

34
Q

thickest wall of the heart chamber

A

left ventricle

35
Q

the heart beat originates in this mass of tissue

A

SA node

36
Q

structure whose job is to sequence the ventricular contractiions with the atrial contractions

A

AV node

37
Q

the electrical conducting system in the outer walls of the ventricles

A

conduction of myofibers (perkingie fibers)

38
Q

location of the SA node of the heart

A

right atrium

39
Q

the QRS spike represents this event

A

ventricular contraction

40
Q

the second heart sound (dupp) is caused by this

A

closing semilunar valves

41
Q

heart rate is monitored and regulated by this structure

A

cardiovascular center of medulla

42
Q

nerve that decreases the heart rate

A

vagus

43
Q

the heart speeds up when we stand up quickly due to receptors here that detect blood pressure changes

A

corotid artery

44
Q

cardiac cycle

A

relaxation
artial systole
ventricular systole

45
Q

coronary arteries branch off of the

A

aorta

46
Q

the action of _____ causes audible heart sounds

A

valves

47
Q

improperly closing valves

A

cause heart murmurs

48
Q

the period of relaxation in the cardiac cycle

A

diastole

49
Q

a heart that is stretched just before contraction will contract stronger according to this law

A

degree of stretch Frank - Starling

50
Q

the contraction phase of the heart

A

systole

51
Q

the good chemicals that take cholesterol to liver are

A

high density lipo protiens (HDL’s)

52
Q

what causes the semilunar valves to close

A

drop in blood pressure

53
Q

the volume of blood ejected from each ventricle with one contraction of the heart

A

70ML

54
Q

the amount of blood ejected by each ventricle each minute

A

cardiac output

55
Q

the term describing heart chamber contraction is ____.

A

systole

56
Q

name several chemicals which would act to slow the heart rate

A

Ca+2 Na+1 and K+1

57
Q

the term describing heart chamber relaxation is

A

diastole

58
Q

chest pain caused from ischemia

A

angina pectoris

59
Q

inflammation of the heart covering

A

pericarditis