Systemic&Pulmonary Circulation Part 3 Flashcards

1
Q

If the aortic pressure is increased, then the cardiac output ________, the TPR _________, or both

A

Increased x 2

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2
Q

Making an accurate measurement of a mean vascular pressure requires inserting a needle or a catheter into the ______ of interest

A

Vessel

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3
Q

Naturally occurring _________ is rate in veterinary species

A

Hypertension

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4
Q

Hypertension is normal cardiac output and ________ blood pressure and TPR

A

Elevated

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5
Q

Serve hemorrhage or dehydration are results of:
__________ cardiac output = ________ blood pressure
TPR: _______ because the body constricts the arterioles in the kidneys, splanchnic circulation, and resting skeletal muscle

A

Decreased x 2
Increased

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6
Q

What minimizes the fall in arterial pressure in kidneys, splanchnic circulation and resting skeletal muscle?

A

Vasoconstriction

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7
Q

Responses to vigorous exercise:
Cardiac output is ________ by fourfold
TPR is ________ by 1/4 of resting value because the articles in the exercising muscles dilate, which increases skeletal blood flow

A

Elevated
Decreased

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8
Q

During vigorous exercise the aortic pressure is _________ changed

A

Negligibly

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9
Q

The pulmonary resistance is calculated as a pressure difference divided by _____

A

Flow

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10
Q

The perfusion pressure that forces blood through the pulmonary circuit is the pressure in the pulmonary artery minus the pressure in the pulmonary _____

A

Veins

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11
Q

What is the pulmonary resistance?

A

3.2mm Hg/L/min

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12
Q

During exercise, the resistance of the pulmonary vessels ____ greatly, which is advantageous because it allows the pulmonary flow to increase without necessitating a large increase in the pulmonary arterial pressure

A

DROPS

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13
Q

Blood pressure within the aorta and pulmonary artery is not constant but rather ________

A

Pulsatile

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14
Q

Low pulse pressure is referred to as ______, or _____, pulse

A

Thready
Weak

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15
Q

High pulse pressure may be called _______, or ______, pulse

A

Bounding
Strong

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16
Q

Pulse pressure increases when the stroke volume _______, the heart rate ________, or aortic compliance decreases

A

Increases
Decreases

17
Q

Increase in stoke volume tends to increase pulse pressure because cardiac ejection create the arterial pulsations in the first place, so:
Larger ejection = larger ________

A

Pulsations

18
Q

Increase in stroke volume increase mean arterial pressure because increased stoke volume _________ cardiac output

A

Increases

19
Q

Decrease in heart rate =
________ pulse pressure
________ diastole pressure and mean arterial pressure

A

Increases
Decreases