Question 1

Which of the following best describes the function of the integumentary system?

Accepted Answer

It protects against environmental hazards, helps regulate body temperature, and synthesizes vitamin D.

Question 2

A patient presents with a stab wound in the left lower quadrant (LLQ) of the abdomen. Which organ is most likely to be affected?

Accepted Answer

Descending colon

Question 3

Which of the following body cavities contains the heart and lungs?

Accepted Answer

Thoracic cavity

Question 4

Which feedback mechanism is responsible for reducing the effect of a stimulus, such as the regulation of blood glucose?

Accepted Answer

Negative feedback

Question 5

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

Accepted Answer

Chemical → Cellular → Tissue → Organ → Organism

Question 6

Which organ is NOT part of the lymphatic system?

Accepted Answer

Pancreas

Question 7

A molecule of water ($$H_2O) $$exhibits which of the following types of chemical bonds between its atoms?

Accepted Answer

Covalent bonds

Question 8

Which of the following statements about protons is TRUE?

Accepted Answer

Protons have a positive charge and determine the element's identity.

Question 9

A solution has a pH of 4. What does this indicate about the solution?

Accepted Answer

It is acidic.

Question 10

Which of the following best describes the function of enzymes in biological systems?

Accepted Answer

Enzymes act as biological catalysts that speed up chemical reactions by lowering activation energy.

Question 11

Which of the following macromolecules is primarily responsible for storing genetic information?

Accepted Answer

Nucleic acids

Question 12

Which organ system is responsible for distributing blood, nutrients, wastes, and dissolved gases, and assists in controlling body temperature?

Accepted Answer

Cardiovascular system

Question 13

A patient is unable to maintain body temperature and has poor wound healing. Which organ system is most likely impaired?

Accepted Answer

Integumentary system

Question 14

Which of the following is a function of the urinary (excretory) system?

Accepted Answer

Regulates blood volume, concentration, and pH by excreting wastes.

Question 15

Which of the following best describes a hydrogen bond?

Accepted Answer

A weak attraction between a hydrogen atom and an electronegative atom in another molecule.

Question 16

Which of the following is the correct formula for calculating pH?

Accepted Answer

$$pH = -\log_{10}[H^+]$$

Question 17

Which of the following is a monomer for proteins?

Accepted Answer

Amino acid

Question 18

Which of the following best describes the function of the nervous system?

Accepted Answer

Delivers immediate responses to stimuli, coordinates activities of other organ systems, and provides sensory information about external conditions.

Question 19

Which of the following is a function of the skeletal system?

Accepted Answer

Provides support and protection for other tissues, stores calcium and other minerals, and forms blood cells.

Anatomy & Physiology: Foundational Concepts, Body Systems, and Chemical Basis of Life

Study Guide - Practice Questions