Question 1

Which of the following best illustrates the principle of 'form follows function' in human anatomy?

Accepted Answer

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

Question 2

Which feedback mechanism is primarily responsible for maintaining blood glucose levels within a narrow range after a meal?

Accepted Answer

Negative feedback loop

Question 3

A patient is experiencing a fever due to an infection. Which homeostatic component first detects the change in body temperature?

Accepted Answer

Receptor

Question 4

Which of the following is NOT one of the eight characteristics of life?

Accepted Answer

Ability to photosynthesize

Question 5

During childbirth, uterine contractions become stronger and more frequent until delivery. This is an example of:

Accepted Answer

Positive feedback

Question 6

Which organ system is responsible for returning leaked fluids to blood vessels and helping defend against germs?

Accepted Answer

Lymphatic system

Question 7

Which level of organization is immediately above the cellular level in the human body?

Accepted Answer

Tissue

Question 8

A concentration gradient is essential for which physiological process in the lungs?

Accepted Answer

Gas exchange (oxygen and carbon dioxide diffusion)

Question 9

Which of the following best describes the role of effectors in a homeostatic feedback loop?

Accepted Answer

They carry out the response to restore the regulated variable to its set point.

Question 10

Which newly discovered organ system connects the intestine to the abdominal wall and allows blood vessels, lymphatics, and nerves to supply the intestine?

Accepted Answer

Mesentery

Question 11

Which equation best represents the relationship between metabolism, anabolism, and catabolism?

Accepted Answer

$$ Metabolism = Anabolism + Catabolism $$

Question 12

A patient with diabetes has a blood glucose level of 200 mg/dL (normal range: 70–110 mg/dL). Which homeostatic process is failing?

Accepted Answer

Negative feedback regulation of blood glucose

Question 13

Which of the following is an example of cell-cell communication via chemical signaling?

Accepted Answer

Release of insulin from the pancreas affecting distant cells in the body

Question 14

Which organ system is unique in lacking lymphatic vessels to assist in the removal of metabolic waste products?

Accepted Answer

Central nervous system (CNS)

Question 15

Which of the following best describes a pressure gradient in the context of blood flow?

Accepted Answer

Blood moves from areas of higher pressure to areas of lower pressure.

Question 16

Which of the following is a correct sequence of the major structural levels of organization in the human body, from simplest to most complex?

Accepted Answer

Chemical → Cellular → Tissue → Organ → Organ system → Organism

Question 17

Which of the following is an example of a positive feedback loop in physiology?

Accepted Answer

Amplification of platelet activation during blood clotting

Question 18

Which type of tissue is primarily responsible for movement in the human body?

Accepted Answer

Muscle tissue

Question 19

Which of the following best explains why cell-cell communication is essential for multicellular organisms?

Accepted Answer

It allows cells to coordinate functions and maintain homeostasis.

Question 20

Which equation best represents the concept of a gradient in physiology?

Accepted Answer

$$ Gradient = \frac{	ext{Difference in quantity}}{	ext{Distance between two points}} $$

Anatomy & Physiology Core Principles: Structure, Function, and Organization

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