Question 1

Which of the following best illustrates the principle of complementarity of structure and function in human anatomy?

Accepted Answer

The structure of alveoli in the lungs maximizes surface area for gas exchange.

Question 2

A patient presents with numbness in the hands due to vitamin deficiencies that damage nerves, resulting in failure to withdraw from painful stimuli. Which component of the homeostatic mechanism is primarily affected?

Accepted Answer

Receptor

Question 3

Which of the following correctly lists the levels of structural organization in order of increasing complexity?

Accepted Answer

Chemical, cellular, tissue, organ, organ system, organism

Question 4

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

Accepted Answer

Release of oxytocin during labor to intensify uterine contractions

Question 5

A solution has a pH of 5. Which of the following statements is correct regarding its hydrogen ion concentration?

Accepted Answer

It has a higher concentration of $$\mathrm{H^+}$$ ions than a solution with pH 7.

Question 6

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

Accepted Answer

Defends the body from foreign substances and returns leaked fluids to the blood

Question 7

A neutral atom of fluorine has an atomic number of 9 and a mass number of 19. How many neutrons does it contain?

Accepted Answer

$$10$$

Question 8

Which of the following statements about chemical bonds is correct?

Accepted Answer

Ionic bonds are formed when one atom donates an electron to another atom.

Question 9

Which of the following is a property of water that is essential for life and homeostasis?

Accepted Answer

It has a high heat capacity, allowing it to absorb and release large amounts of heat with little temperature change.

Question 10

Which of the following best describes the anatomical position?

Accepted Answer

Standing upright, feet slightly apart, arms at sides with palms facing forward

Question 11

A patient is experiencing muscle cramps due to an imbalance of sodium and potassium ions. Which property of these ions is most directly responsible for their role in nerve impulse transmission?

Accepted Answer

They are electrolytes, conducting electrical currents in solution.

Question 12

Which of the following macromolecules is correctly matched with its building block?

Accepted Answer

Proteins – amino acids

Question 13

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

Accepted Answer

Transports nutrients, gases, and wastes throughout the body via blood

Question 14

Which of the following is true regarding the law of mass balance as it applies to human physiology?

Accepted Answer

The amount of a substance taken in by the body must equal the amount lost.

Question 15

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

Accepted Answer

Separates the body's internal environment from the external environment

Question 16

Which of the following best describes a transverse (horizontal) plane?

Accepted Answer

A plane that divides the body into superior and inferior parts

Question 17

Which of the following is true regarding isotopes?

Accepted Answer

Isotopes have the same number of protons but different numbers of neutrons.

Question 18

Which of the following is a correct statement about the energy currency of the cell?

Accepted Answer

ATP is hydrolyzed to ADP to release energy for cellular processes.

Question 19

A patient with appendicitis will most likely experience pain in which abdominal region?

Accepted Answer

Right lower quadrant

Question 20

Which of the following best describes the relationship between the elbow and the wrist?

Accepted Answer

The elbow is proximal to the wrist.

Anatomy & Physiology Chapter 1 & 2 Study Guidance

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