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med term exam 2 > cardiovascular general > Flashcards

cardiovascular general Flashcards

1
Q

what are flat leaf shaped structures that comprise the valves of the heart and prevent the back flow of blood

A

leaflets

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2
Q

what are tubular spaces or channels within an organ to structure such as the space within an artery

A

lumen

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3
Q

what is the back flow or ejection of contents through an opening

A

regurgitation

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4
Q

what are circular muscles found in the tubular structure of hollow organs that constrict or dilate to regulate the passing of stuff though it

A

sphincters

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5
Q

what is the narrowing of the lumen of a blood vessels

A

vasoconstriction

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6
Q

what is the widening of the lumen of a blood vessel

A

vasodialation

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7
Q

thickness or a measure of how resistant a liquid is to flowing

A

viscosity

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8
Q

what is the outer coat of the vessel that is composed of connective tissue

what is the middle layer made of smooth muscle

what in the inner layer made of endothelial cells

A

tunica externa

tunica media

tunica interna

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9
Q

the surge of blood felt when it is pumped form the heart

A

pulse

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10
Q

microscopic vessels that join the arterial and venous system

A

capillaries

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11
Q

smaller veins

A

venules

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12
Q

smaller arteries

A

arterioles

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13
Q

small structures within veins that prevent back flow

A

valves

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14
Q

muscular pump organ

A

heart

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15
Q

sac that the heart is enclosed in

A

pericardium

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16
Q

serous membrane that lines the four chambers of the heart and is continuous with endothelium of arteries and veins

A

endocardium

17
Q

muscular layer of the heart

A

myocardium

18
Q

outermost layer of the heart

A

epicardium

19
Q

right side of the heart AV valve

A

tricuspid

20
Q

what is the left AV valve

A

mitral

21
Q

artery vascularizing the right side of the heart

A

right coronary artery

22
Q

two branches of the left coronary artery

A

left anterior descending artery

circumflex artery

23
Q

specialized conduction tissue

A

conduction tissue

24
Q

what node possess its own intrinsic rhythms

what is its other name

A

sinoatrial

pacemaker

25
Q

what nervous system deals with the SA node

A

autonomic

26
Q

what node receives signals after the SA node

A

AV node

27
Q

order of imposes of nodes 1-4

A

SA
AV
bundle of His
purkinje fibers

28
Q

what instrument records impulse transmission of the heart

A

electrocardiograph

29
Q

what wave is:
depolarization of the atria
depolarization of ventricles
depolarization of ventricles

A

P
QRS
T

30
Q

what is the force exerted by blood against the arterial walls

A

blood pressure

31
Q

heart contraction

A

systole

32
Q

heart relaxation

A

diastole

33
Q

what measures blood pressure

A

sphygmomanometer

34
Q
A

med term exam 2 (9 decks)

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