Question 1

Which of the following mechanisms is responsible for the long-term regulation of blood pressure by the kidneys?

Accepted Answer

Direct renal mechanism and renin-angiotensin-aldosterone system

Question 2

A patient presents with sustained arterial pressure of 150/95 mm Hg. Which condition does this most likely indicate?

Accepted Answer

Hypertension

Question 3

Which hormone is released from the adrenal medulla during stress and increases cardiac output and vasoconstriction?

Accepted Answer

Epinephrine

Question 4

What is the correct formula for calculating net filtration pressure (NFP) at the capillary bed?

Accepted Answer

$$NFP = (HP_c + OP_c) - (HP_{if} + OP_{if})$$

Question 5

During exercise, which brain region mediates redistribution of blood flow and changes in body temperature?

Accepted Answer

Hypothalamus

Question 6

Which of the following is a direct effect of angiotensin II in the regulation of blood pressure?

Accepted Answer

Acts as a potent vasoconstrictor

Question 7

A patient with chronic hypertension is at increased risk for which of the following complications?

Accepted Answer

Atherosclerosis and heart failure

Question 8

Which of the following best describes the role of baroreceptors in short-term blood pressure regulation?

Accepted Answer

They detect changes in blood pressure and send signals to the vasomotor center to adjust vessel diameter.

Question 9

Which of the following is a metabolic factor that causes vasodilation in local tissue perfusion?

Accepted Answer

Release of nitric oxide (NO)

Question 10

If mean arterial pressure (MAP) increases, what is the myogenic response of local vascular smooth muscle?

Accepted Answer

Smooth muscle constricts, decreasing blood flow to tissue

Question 11

Which of the following is true regarding capillary exchange?

Accepted Answer

Capillaries have the largest cross-sectional area and slowest flow

Question 12

Atrial natriuretic peptide (ANP) decreases blood pressure by which mechanism?

Accepted Answer

Antagonizing aldosterone and causing vasodilation

Question 13

Which of the following is a correct statement about the direct renal mechanism for blood pressure regulation?

Accepted Answer

It alters blood volume independently of hormones

Question 14

Which equation correctly relates mean arterial pressure (MAP), cardiac output (CO), and resistance (R)?

Accepted Answer

$$MAP = CO 	imes R$$

Question 15

Which of the following is NOT a function of tissue perfusion?

Accepted Answer

Production of red blood cells in bone marrow

Question 16

Which of the following arteries is responsible for supplying blood to the brain?

Accepted Answer

Carotid artery

Question 17

Which of the following veins is responsible for draining blood from the brain?

Accepted Answer

Superior sagittal sinus

Question 18

Which of the following is a plausible consequence of loss of homeostasis due to prolonged hypertension?

Accepted Answer

Heart muscle enlargement and weakening

Question 19

Which of the following is a short-term neural control of blood pressure?

Accepted Answer

Baroreceptor reflex

Question 20

Which of the following best describes the effect of ADH on blood pressure?

Accepted Answer

Increases blood pressure by promoting water retention

Blood Vessels: Regulation, Capillary Exchange, and Major Arteries & Veins (ANP 1105A Lecture 17 Study Notes)

Study Guide - Practice Questions