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2 - Form & Function > Lecture 12 - Cardiac Pumping Cycle > Flashcards

Lecture 12 - Cardiac Pumping Cycle Flashcards

1
Q

what is the Right atrium’s mean pressure

A

5

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2
Q

what is the right ventricle’s pressure

A

25/5

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3
Q

what is the pulmonary artery’s pressure

A

25/10

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4
Q

what is the left atrium’s pressure

A

10

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5
Q

what is the left ventricle’s systolic pressure

A

> 100

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6
Q

diastole

A

relaxation/filling

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7
Q

systole

A

pumping/contraction

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8
Q

T/F: mechanical events follow electrical events seen on an ECG

A

TRUE

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9
Q

describe late diastole

A

both sets of chambers are relaxed and ventricles fill passively

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10
Q

describe atrial systole

A

atrial contraction forces a small amount of additional blood into the ventricles

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11
Q

describe isovolumic ventricular contraction

A

ventricular contraction pushes AV valves closed but there is not enough pressure to open semilunar valves

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12
Q

describe ventricular ejection

A

ventricular pressure rises and exceeds the pressure in arteries, semilunar valves open, and blood is ejected

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13
Q

describe isovolumic relaxation

A

ventricles relax, ventricle pressure falls, and blood flows back to closed semilunar valves

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14
Q

what occurs mid-diastole

A

passive ventricular filling and active atrial contraction

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15
Q

blood flows ___ pressure to ____ pressure

A

high; low

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16
Q

End diastolic volume (EDV)

A

volume in ventricle is at its maxiumum

17
Q

In isovolumic contraction ____ increases but ___ is constant

A

pressure; volume

18
Q

stroke volume

A

volume of blood pumped out of the left ventricle during each systolic contraction

EDV - ESV (leftover)

19
Q

Ejection fraction

A

fraction of blood ejected from the ventricle

20
Q

when is volume unchanging

A

early systole and diastole

21
Q

what is a low-pressure, low-resistance circuit

A

pulmonary

2 - Form & Function (11 decks)

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