Question 1

Which statement best describes the relationship between anatomy and physiology?

Accepted Answer

Anatomy focuses on body structures and their relationships, while physiology examines how those structures perform their functions.

Question 2

Which of the following is the correct order of levels of organization in the human body, from simplest to most complex?

Accepted Answer

Chemical, cell, tissue, organ, organ system, organism

Question 3

A patient is experiencing difficulty breathing due to inflammation of the pleural membrane. Which body cavity is directly affected?

Accepted Answer

Thoracic cavity

Question 4

Which anatomical plane divides the body into equal left and right halves?

Accepted Answer

Midsagittal plane

Question 5

Which of the following best illustrates the principle that structure determines function?

Accepted Answer

The flat shape of red blood cells allows them to carry oxygen efficiently.

Question 6

Which serous membrane surrounds the heart?

Accepted Answer

Pericardial membrane

Question 7

Homeostasis is primarily maintained by which two body systems?

Accepted Answer

Nervous and endocrine systems

Question 8

Which of the following is an example of a negative feedback mechanism?

Accepted Answer

Regulation of body temperature

Question 9

In a feedback loop, what is the role of the effector?

Accepted Answer

To carry out the response to restore homeostasis

Question 10

A patient has a rapid increase in blood clotting after a vessel is damaged. Which type of feedback is responsible for this process?

Accepted Answer

Positive feedback

Question 11

Which of the following best describes a gradient in physiology?

Accepted Answer

A difference in concentration, pressure, or temperature between two regions

Question 12

If blood glucose levels rise after a meal, which of the following best describes the role of insulin in homeostasis?

Accepted Answer

Insulin acts as the effector lowering blood glucose levels.

Question 13

Which of the following is NOT a subdivision of the ventral body cavity?

Accepted Answer

Cranial cavity

Question 14

Which core principle in anatomy and physiology explains why oxygen moves from the lungs into the blood?

Accepted Answer

Gradients drive physiological processes

Question 15

Which of the following best describes the function of serous membranes?

Accepted Answer

They reduce friction and protect enclosed organs.

Question 16

A nerve cell releases chemical messengers to a muscle cell, causing it to contract. Which core principle does this illustrate?

Accepted Answer

Cell-cell communication is required to coordinate body functions

Question 17

Which of the following equations best represents the concept of homeostasis in terms of feedback loops?

Accepted Answer

$$R = S - F$$, where $$R is $$the response, $$S is $$the stimulus, and $$F is $$the feedback$

Question 18

Which of the following scenarios would most likely require positive feedback rather than negative feedback?

Accepted Answer

Amplification of uterine contractions during childbirth

Question 19

Which layer of a serous membrane lines the wall of a body cavity?

Accepted Answer

Parietal layer

Question 20

A cross-section of the body is made at the level of the diaphragm. Which anatomical plane is used?

Accepted Answer

Transverse plane

Introduction to Anatomy & Physiology: Core Principles and Organization

Study Guide - Practice Questions