Question 1

Which of the following best describes the mechanism of action for steroid hormones?

Accepted Answer

They directly enter the cell and bind to intracellular receptors, influencing gene transcription.

Question 2

A patient presents with low blood calcium levels. Which hormone is most likely to be elevated in response?

Accepted Answer

Parathyroid hormone (PTH)

Question 3

Which of the following is a function of aldosterone?

Accepted Answer

Promoting sodium reabsorption in the kidneys

Question 4

Which hormone is released by the adrenal medulla in response to stress, and what is its primary effect?

Accepted Answer

Epinephrine; increases heart rate and blood pressure

Question 5

Which plasma protein is most prevalent in human blood and is primarily responsible for maintaining osmotic pressure?

Accepted Answer

Albumin

Question 6

A patient with anemia is found to have decreased erythropoietin levels. Which organ is most likely failing to produce this hormone?

Accepted Answer

Kidney

Question 7

During the cardiac cycle, which phase is associated with ventricular contraction and ejection of blood?

Accepted Answer

Systole

Question 8

Which equation correctly represents cardiac output ($$CO) in $$terms of heart rate ($$HR) $$and stroke volume ($$SV$$)?

Accepted Answer

$$CO = HR 	imes SV$$

Question 9

Which layer of a typical blood vessel is primarily responsible for vasoconstriction and vasodilation?

Accepted Answer

Tunica media

Question 10

A patient is experiencing high blood pressure. Which hormone is most likely to be released to lower blood pressure?

Accepted Answer

Atrial natriuretic peptide (ANP)

Question 11

Which of the following is NOT a function of the lymphatic system?

Accepted Answer

Producing red blood cells

Question 12

Which cell type is primarily responsible for antibody production in the adaptive immune system?

Accepted Answer

B cells

Question 13

Boyle's Law describes the relationship between pressure and volume in the lungs. Which equation correctly represents this law?

Accepted Answer

$$P \propto \frac{1}{V}$$

Question 14

Which digestive enzyme is secreted by the pancreas and is responsible for breaking down carbohydrates?

Accepted Answer

Amylase

Question 15

Which part of the nephron is primarily responsible for filtration of blood?

Accepted Answer

Glomerulus

Question 16

Which hormone increases water reabsorption in the kidneys, thereby reducing urine output?

Accepted Answer

Antidiuretic hormone (ADH)

Question 17

Which buffer system is most important for maintaining blood pH?

Accepted Answer

Bicarbonate buffer system

Question 18

During spermatogenesis, where are sperm cells stored before ejaculation?

Accepted Answer

Epididymis

Question 19

Which phase of the ovarian cycle is characterized by the release of an egg from the ovary?

Accepted Answer

Ovulation

Question 20

Which of the following is a correct description of the function of surfactant in the lungs?

Accepted Answer

It decreases surface tension, preventing alveolar collapse.

Comprehensive Study Guide: Anatomy & Physiology II Final Exam Review

Study Guide - Practice Questions