Question 1

Which of the following best describes homeostasis?

Accepted Answer

The process by which the body maintains a stable internal environment despite external changes.

Question 2

A patient is experiencing a rapid increase in blood clotting after an initial injury. Which feedback mechanism is primarily responsible for this response?

Accepted Answer

Positive feedback

Question 3

Which of the following is a correct example of a negative feedback mechanism?

Accepted Answer

Secretion of insulin in response to high blood glucose levels

Question 4

Which statement correctly differentiates between endocrine and exocrine glands?

Accepted Answer

Endocrine glands secrete hormones directly into the bloodstream, while exocrine glands secrete substances into ducts.

Question 5

Amino acid-based hormones typically bind to which type of receptor, and what is a likely effect?

Accepted Answer

Cell membrane receptors; activation of second messenger systems

Question 6

Which of the following best illustrates hormonal stimulation of an endocrine gland?

Accepted Answer

The anterior pituitary releases TSH, which stimulates the thyroid gland to secrete thyroid hormones.

Question 7

Which hormone is secreted by the zona fasciculata of the adrenal cortex, and what is its primary effect?

Accepted Answer

Cortisol; increases blood glucose by stimulating gluconeogenesis

Question 8

A patient with type 1 diabetes mellitus is most likely to experience which of the following?

Accepted Answer

Destruction of pancreatic beta cells leading to insufficient insulin production

Question 9

Which of the following best describes the function of the mucosa layer in the gastrointestinal tract?

Accepted Answer

It secretes mucus, absorbs nutrients, and protects underlying tissues.

Question 10

During swallowing (deglutition), which process moves the bolus from the pharynx to the stomach?

Accepted Answer

Peristalsis

Question 11

Which cell type in the gastric glands secretes hydrochloric acid?

Accepted Answer

Parietal cells

Question 12

Which of the following is a function of bile produced by the liver?

Accepted Answer

Emulsification of dietary fats to aid in digestion

Question 13

Which enzyme is secreted by the pancreas and is responsible for digesting proteins?

Accepted Answer

Trypsin

Question 14

Which modification of the small intestine increases its surface area for nutrient absorption?

Accepted Answer

Villi and microvilli

Question 15

Which of the following best defines catabolism?

Accepted Answer

The breakdown of complex molecules into simpler ones, releasing energy

Question 16

How many ATP molecules are produced from glycolysis per glucose molecule?

Accepted Answer

$$2$$

Question 17

Calculate the total number of ATP molecules produced from one glucose molecule after glycolysis, the Krebs cycle, and the electron transport chain are complete.

Accepted Answer

$$36 to$$ $$38$$

Question 18

Why is oxygen ($$O_2) $$essential for cellular respiration?

Accepted Answer

It acts as the final electron acceptor in the electron transport chain, allowing ATP production.

Question 19

Which of the following best describes the absorptive state?

Accepted Answer

The period during and shortly after eating when nutrients are being absorbed and stored.

Question 20

A patient has a tumor in the anterior pituitary causing excess secretion of growth hormone. Which of the following is a likely effect?

Accepted Answer

Abnormal increase in bone and tissue growth (acromegaly in adults)

ANP Study Guide: Homeostasis, Endocrine System, Digestive System, and Metabolism

Study Guide - Practice Questions

Study Guide - Flashcards