Question 1

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

Accepted Answer

Anatomy is the study of body structures, and physiology is the study of how those structures function.

Question 2

Place the following levels of organization in the correct order from smallest to largest: organelle, cell, tissue, organ, organ system.

Accepted Answer

Organelle, cell, tissue, organ, organ system

Question 3

Which organ system is primarily responsible for defending the body against infection and returning tissue fluids to the bloodstream?

Accepted Answer

Lymphatic system

Question 4

A patient is unable to regulate their body temperature. Which two organ systems are most directly involved in this homeostatic process?

Accepted Answer

Nervous and endocrine systems

Question 5

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

Accepted Answer

Sweating to reduce body temperature when overheated

Question 6

A solution has a pH of 5. Which of the following statements is true?

Accepted Answer

The solution is acidic and has more hydrogen ions than hydroxide ions.

Question 7

Which type of chemical bond involves the complete transfer of electrons from one atom to another?

Accepted Answer

Ionic bond

Question 8

What is the main function of the organelle shown in the second image (Golgi apparatus)?

Accepted Answer

Modification, sorting, and packaging of proteins and lipids

Question 9

Which plane divides the body into anterior and posterior portions?

Accepted Answer

Frontal (coronal) plane

Question 10

A patient has a blood pH of 7.25. Which buffer system is most important in stabilizing this pH in the human body?

Accepted Answer

Carbonic acid–bicarbonate buffer system

Question 11

Which property of water allows it to dissolve many substances, making it the 'universal solvent'?

Accepted Answer

Its ability to form hydrogen bonds

Question 12

Which of the following best describes a positive feedback mechanism?

Accepted Answer

A response that exaggerates or enhances the original change, moving the body away from homeostasis

Question 13

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

Accepted Answer

Formation of blood cells

Question 14

A molecule of water (H$$_2O) is $$held together by which type of bond?

Accepted Answer

Polar covalent bond

Question 15

Which of the following best explains why enzymes are important for biochemical reactions in the body?

Accepted Answer

They lower the activation energy, allowing reactions to occur more easily.

Question 16

Which organ system is responsible for excreting waste products from the blood and regulating blood ion concentrations?

Accepted Answer

Urinary system

Question 17

A patient is experiencing rapid blood loss from a wound. Which feedback mechanism is activated to quickly stop the bleeding?

Accepted Answer

Positive feedback

Question 18

Which of the following statements about isotopes is correct?

Accepted Answer

Isotopes have the same atomic number but different atomic masses.

Question 19

Which of the following is an example of an inorganic compound essential for human life?

Accepted Answer

Water (H$$_2O)$$

Question 20

Which of the following best describes the function of buffers in body fluids?

Accepted Answer

Buffers stabilize pH by neutralizing acids or bases.

Introduction to Human Anatomy & Physiology: Structure, Function, and Chemical Foundations

Study Guide - Practice Questions