the heart Flashcards

1
Q

circuit where CO2 goes into the lungs

A

pulmonary

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2
Q

circuit where O2 goes to the body

A

systemic

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3
Q

where does oxygenated blood arrive to in the heart

what carries this

A

left atria

pulmonary veins

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4
Q

where does oxygen poor blood enter the heart

what carries it

A

right atria

vena cava

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5
Q

blood sent to organs via the _____

blood sent to the lungs via _____

A

aorta

pulmonary trunk

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6
Q

ventricle responsible for systemic circulation

ventricle responsible for pulmonary circulation

A

left

right

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7
Q

vena cava are _____ circulation

A

systemic

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8
Q

a good rule for if something is in the pulmonary circuit:

A

if it has the word pulmonary in it

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9
Q

where is the heart located

A

mediastinum between the lungs

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10
Q

the wide, superior part of the heart where large blood vessels attach

A

the base

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11
Q

the tapered inferior part of the heart that tilts to the left

A

apex

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12
Q

how much does an adult heart weigh

how wide is it at the base

how tall is it

at any age, the average size of the heart is equal to the persons ______

A

10 oz

3.5 in

5 in

fist

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13
Q

what is the shared wall between the left and right side of the heart

A

septum

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14
Q

the force of the chamber is correlated to its _____

A

thickness

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15
Q

what chamber has the thickest wall

A

the left ventricle

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16
Q

what chamber has a large volume

A

right ventricle

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17
Q

what rib is the sternum attached to

A

3rd

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18
Q

what sits just below the heart

A

the diaphragm

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19
Q

what is the double walled sac that encloses the heart

A

the pericardium

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20
Q

the pericardium allows:

the heart to beat without _____
room to _____
resists ______ expansion

A

friction
expand
excessive

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21
Q

what is the pericardium anchored to

inferiorly:
anteriorly:

A

diaphragm
sternum

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22
Q

what is are the two major parts of the pericardium

A

fibrous pericardium
serous pericardium

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23
Q

what are the layers of the pericardium from external to internal

A

parietal layer
visceral layer

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24
Q

what is another word for the visceral layer of the serous pericardium

A

the epicardium

25
Q

what are the 4 basic layers of the heart from the inside of the chamber to the outside of the heart

A

endocardium
myocardium
epicardium
fibrous pericardium

26
Q

what is the outer wall of the pericardium? is it attached to the heart?

A

fibrous

no

27
Q

what is the space between the parietal and visceral layers of the pericardium

what does it produce

how much fluid does it have at a given time

A

pericardial cavity

pericardial fluid

5-30 mL

28
Q

what is painful inflammation of the pericardium

A

pericarditis

29
Q

what are the grooves on the outside of the heart that separate the right and left ventricles

A

sulcus

30
Q

what payer of the pericardium has adipose in thick layers in some places

A

visceral layer/ epicardium

31
Q

what layer of the pericardium do coronary blood vessels travel through

A

the visceral layer/ epicardium

32
Q

what take waste and provide nutrients to the heart

A

coronary blood vessels

33
Q

what is the smooth inner lining of the heart and its blood vessels

A

endocardium

34
Q

what covers the valve surfaces of the heart

what is it continuous with

A

endocardium

endothelium of blood vessels

35
Q

what is the shape of the heart and the reason that it rings itself out like a wet towel

also called the ____ of the heart

A

spiral

vortex

36
Q

what layer of the heart has cardiac muscle that is proportional to the workload

A

myocardium

37
Q

what is the framework of collagenous and elastic fibers

what layer of the heart is this located

A

fibrous skeleton

myocardium

38
Q

the fibrous skeleton of the heart:

provides structural support and attachment for cardiac muscle and acts as an _____ for _____ tissue

______ insulation between ____ and ______

what is this ^ important for

A

anchor, valve

electrical, atrium and ventricle

timing and coordination of contractions

39
Q

what does electrical insulation in the heart essentially do

A

slows down contractions for efficiency

40
Q

what enlarge the atria for added blood volume

A

auricles

41
Q

the right and let ventricles always pump blood into ______

A

arteries

42
Q

what is another term for the right AV valve

what is another term for the left AC valve

A

tricuspid

mitral

43
Q

what is the wall that separates:

atria-
ventricles-

A

interatrial septum
interventricular septum

44
Q

what can be seen from the outside of the heart that separates atria and ventricles

A

coronary sulcus

45
Q

what does the anterior interventricular sulcus separate

A

ventricles

46
Q

what valve has 3 cusps

what valve has 2 cusps

A

right AV
left AV

47
Q

what are the cords that connect AV valves to papillary muscles

that prevent AV valves from flipping or bulging into _____ when _____ contract

A

chordae tendinae

atria, ventricles

48
Q

what anchor chordae tendonae

A

papillary muscles

49
Q

what valves open and close because of blood flow and pressure

A

semilunar

50
Q

what is systole
what is diastole

A

contraction
relaxation

51
Q

when ventricles relax (during diastole)

pressure drops inside _____
_____ valves close
_____ valves open
blood flows from _____ to _____

A

ventricles
semilunar
AV
atria, ventricles

52
Q

when ventricles contract (systole)

___ valves close
pressure rises inside _____
_____ valves open and blood flows into ____

A

AV
ventricles
semilunar, great vessels

53
Q

what percent of blood pumped by the heart is needs to go through coronary circulation

how many mL is this per min

A

5%

250

54
Q

what does the _____ do

right coronary artery:
left coronary artery:
coronary sinus:

A

pumps blood to the right side

pumps blood to the left side

drains deoxygenated blood from coronary system

55
Q

what is the name for chest pain from partial obstruction of coronary blood flow

A

angina pectoris

56
Q

what is the sudden death of a patch of myocardium resulting from ling term obstruction of coronary circulation called

A

myocardial infarction

57
Q

what percent of deaths are caused by myocardial infarctions

A

27%

58
Q
A