Systemic&Pulmonary Circulation Part 3

Question 1

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

Answer 1

Increased x 2

Question 2

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

Answer 2

Vessel

Question 3

Naturally occurring _________ is rate in veterinary species

Answer 3

Hypertension

Question 4

Hypertension is normal cardiac output and ________ blood pressure and TPR

Answer 4

Elevated

Question 5

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

Answer 5

Decreased x 2
Increased

Question 6

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

Answer 6

Vasoconstriction

Question 7

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

Answer 7

Elevated
Decreased

Question 8

During vigorous exercise the aortic pressure is _________ changed

Answer 8

Negligibly

Question 9

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

Answer 9

Flow

Question 10

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

Answer 10

Veins

Question 11

What is the pulmonary resistance?

Answer 11

3.2mm Hg/L/min

Question 12

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

Answer 12

DROPS

Question 13

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

Answer 13

Pulsatile

Question 14

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

Answer 14

Thready
Weak

Question 15

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

Answer 15

Bounding
Strong

Question 16

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

Answer 16

Increases
Decreases

Question 17

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

Answer 17

Pulsations

Question 18

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

Answer 18

Increases

Question 19

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

Answer 19

Increases
Decreases