Question 1

Which of the following best describes the function of the hypothalamic-pituitary portal system?

Accepted Answer

It allows hormones to be quickly and efficiently transported from the hypothalamus to the anterior pituitary.

Question 2

A patient presents with high blood glucose, increased fat breakdown, and muscle protein loss. Which hormone is most likely elevated?

Accepted Answer

Cortisol

Question 3

Which equation correctly expresses the relationship for molarity ($M$) in terms of moles of solute ($n$) and volume of solution ($V$)?

Accepted Answer

$M = \frac{n}{V}$

Question 4

Which of the following is a correct example of negative feedback in the human body?

Accepted Answer

High blood glucose triggers insulin release, lowering blood glucose levels.

Question 5

Which of the following best describes facilitated diffusion?

Accepted Answer

Passive movement of molecules down their concentration gradient using a channel or carrier protein.

Question 6

A cell has a higher concentration of potassium ($K^+$) inside and a higher concentration of sodium ($Na^+$) outside. What type of equilibrium does this represent?

Accepted Answer

Chemical disequilibrium

Question 7

Which of the following is NOT a function of the Golgi apparatus?

Accepted Answer

Synthesizing proteins for the cell

Question 8

A patient with hypothyroidism is likely to show which of the following symptoms?

Accepted Answer

Weight gain, fatigue, and cold sensitivity

Question 9

Which of the following best describes the role of the extracellular fluid (ECF) in the body?

Accepted Answer

It acts as a buffer zone between the outside world and most of the cells of the body.

Question 10

Which of the following is a correct example of positive feedback?

Accepted Answer

Childbirth contractions are stimulated by a hormone, which causes more contractions until the baby is born.

Question 11

Which of the following is a function of the lysosome?

Accepted Answer

Breaking down waste materials, worn out organelles, and pathogens

Question 12

Which of the following best describes the difference between simple diffusion and facilitated diffusion?

Accepted Answer

Simple diffusion does not require proteins, while facilitated diffusion uses channel or carrier proteins.

Question 13

Which of the following is TRUE about osmotic equilibrium?

Accepted Answer

It refers to the balance of water and solutes across cell membranes.

Question 14

Which of the following is a correct statement about the action of growth hormone (GH)?

Accepted Answer

GH stimulates the liver to release insulin-like growth factors (IGFs) into the bloodstream.

Question 15

Which of the following is a correct definition of osmolarity?

Accepted Answer

Osmolarity is the number of particles per liter of solution.

Question 16

Which of the following best describes the function of the mitochondria?

Accepted Answer

It produces ATP through cellular respiration.

Question 17

Which of the following is a correct statement about the thyroid hormones T3 and T4?

Accepted Answer

They are released from the thyroid gland and regulate metabolism.

Question 18

Which of the following is a correct statement about the role of calcium in the body?

Accepted Answer

Calcium is important for bone strength and muscle contraction.

Question 19

Which of the following is a correct statement about the function of the plasma membrane?

Accepted Answer

It controls the movement of substances in and out of the cell.

Anatomy & Physiology: Homeostasis, Cell Physiology, Tissues, and Endocrine System Study Guide

Study Guide - Practice Questions

Study Guide - Flashcards