Question 1

Which of the following best defines the field of physiology?

Accepted Answer

The study of the function of the body and its parts.

Question 2

Which of the following is NOT one of the 7 characteristics of living things?

Accepted Answer

Ability to photosynthesize

Question 3

A patient is experiencing a dangerously high blood calcium level. Which homeostatic mechanism is most likely to be activated to restore balance?

Accepted Answer

A negative feedback loop that decreases blood calcium

Question 4

Which of the following best describes a negative feedback loop?

Accepted Answer

A process that opposes or reduces the original stimulus

Question 5

Which of the following is an example of a positive feedback mechanism in the human body?

Accepted Answer

Blood clotting after a vessel injury

Question 6

In a typical feedback loop, which component detects a change in the environment?

Accepted Answer

Receptor

Question 7

Which of the following best explains why homeostasis is important for survival?

Accepted Answer

It maintains internal conditions within narrow limits, allowing cells to function optimally.

Question 8

Which of the following is the correct order of organization from simplest to most complex?

Accepted Answer

Cell, tissue, organ, organ system, organism

Question 9

A person is exposed to cold weather, causing their body temperature to drop. Which of the following best describes the body's response?

Accepted Answer

A negative feedback loop triggers shivering to generate heat.

Question 10

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

Accepted Answer

It lubricates and reduces friction between organs.

Question 11

Which of the following is a correct statement about the thoracic cavity?

Accepted Answer

It is separated from the abdominal cavity by the diaphragm.

Question 12

Which of the following best describes the main function of the control center in a feedback loop?

Accepted Answer

It processes information and determines the appropriate response.

Question 13

Which of the following is an example of a disruption in homeostasis?

Accepted Answer

A sudden drop in blood glucose after skipping a meal

Question 14

Which of the following best describes the relationship between anatomy and physiology?

Accepted Answer

Anatomy is the study of structure, and physiology is the study of function.

Question 15

Which of the following best describes the function of the effector in a feedback loop?

Accepted Answer

It carries out the response to restore homeostasis.

Question 16

A patient has a blood glucose level of $200\ \mathrm{mg/dL}$ after a meal. Which of the following best describes the homeostatic response?

Accepted Answer

A negative feedback loop increases insulin secretion to lower blood glucose.

Question 17

Which of the following is the correct definition of cytology?

Accepted Answer

The study of cells

Question 18

Which of the following best explains why the cell is considered the basic unit of life?

Accepted Answer

Cells are the smallest structures that perform all vital functions.

Question 19

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

Accepted Answer

It covers organs and lines body cavities, producing serous fluid to reduce friction.

Question 20

Which of the following is a correct example of a stimulus in a feedback loop?

Accepted Answer

A drop in external temperature

Introduction to Anatomy & Physiology: Key Concepts and Foundations

Study Guide - Practice Questions