$MAP = \text{Diastolic Pressure} + \frac{1}{3} \times \text{Pulse Pressure}$

Question 1

Which layer of a blood vessel is primarily responsible for vasoconstriction and vasodilation, and what type of tissue is found there?

Accepted Answer

Tunica media; smooth muscle

Question 2

A patient with atherosclerosis has plaque buildup in their arteries. Which of the following is NOT a recommended treatment for this condition?

Accepted Answer

Increased intake of sugar

Question 3

If the radius of a blood vessel decreases, what happens to peripheral resistance and blood flow?

Accepted Answer

Peripheral resistance increases; blood flow decreases

Question 4

Which equation correctly represents the relationship between blood pressure, cardiac output, and peripheral resistance?

Accepted Answer

$\Delta P = CO 	imes PR$

Question 5

During which phase of the cardiac cycle is systolic pressure measured in the arteries?

Accepted Answer

During ventricular contraction

Question 6

A patient has a blood pressure of 120/80 mmHg. What is their pulse pressure?

Accepted Answer

$120 - 80 = 40\ 	ext{mmHg}$

Question 7

Which of the following capillary types is most suited for rapid exchange of substances, and where is it commonly found?

Accepted Answer

Fenestrated capillary; kidney

Question 8

If blood pressure drops below normal, which immediate response is triggered by the baroreceptor reflex?

Accepted Answer

Increased sympathetic output

Question 9

Which hormone is released to decrease blood pressure by promoting excretion of sodium and water from the kidneys?

Accepted Answer

Atrial Natriuretic Peptide (ANP)

Question 10

What is the primary mechanism by which capillaries exchange gases and nutrients with tissues?

Accepted Answer

Diffusion and osmosis

Question 11

Which of the following would most likely cause edema?

Accepted Answer

Excessive filtration

Question 12

Which nervous system is primarily responsible for increasing peripheral resistance and blood pressure through vasoconstriction?

Accepted Answer

Sympathetic nervous system

Question 13

Which of the following is NOT a function of the tunica externa in blood vessels?

Accepted Answer

Vasoconstriction

Question 14

If a patient has severe hypotension, what is the most likely effect on urine production?

Accepted Answer

Decreased urine production due to low blood flow

Question 15

Which of the following best describes the effect of vasodilation on blood flow through a capillary bed?

Accepted Answer

Increases local perfusion

Question 16

Which equation is used to calculate mean arterial pressure (MAP) from systolic and diastolic pressures?

Accepted Answer

$MAP = 	ext{Diastolic Pressure} + \frac{1}{3} 	imes 	ext{Pulse Pressure}$

Question 17

Which of the following is a risk factor for hypertension?

Accepted Answer

Obesity

Question 18

Which capillary type is most likely to be found in the liver and spleen, allowing passage of large molecules?

Accepted Answer

Sinusoid capillary

Question 19

What is the effect of increased blood viscosity on blood pressure?

Accepted Answer

Increases blood pressure

Question 20

Which of the following is NOT a factor that assists venous return to the heart?

Accepted Answer

High arterial pressure

Blood Vessels and Hemodynamics: ANP Study Guide

Study Guide - Practice Questions