Question 1

Which of the following best describes the primary function of the small intestine in the digestive process?

Accepted Answer

Absorption of nutrients into the bloodstream

Question 2

During the cephalic phase of digestion, which of the following events is most likely to occur?

Accepted Answer

Stimulation of gastric secretions by the sight and smell of food

Question 3

A patient has a deficiency in bile production. Which process will be most directly affected?

Accepted Answer

Emulsification and absorption of lipids

Question 4

Which equation best represents the chemical breakdown of starch by salivary amylase?

Accepted Answer

$$\mathrm{Starch} + \mathrm{H_2O} \xrightarrow{amylase} \mathrm{Maltose}$$

Question 5

Which of the following hormones is primarily responsible for stimulating the release of pancreatic enzymes during digestion?

Accepted Answer

Cholecystokinin (CCK)

Question 6

A patient presents with jaundice and steatorrhea (fatty stools). Which organ is most likely malfunctioning?

Accepted Answer

Liver

Question 7

Which of the following best explains why pepsin is only active in the stomach?

Accepted Answer

Pepsin is activated by hydrochloric acid, which is only present in the stomach

Question 8

Which of the following is the correct sequence of events in the female ovarian cycle?

Accepted Answer

Follicular phase → Ovulation → Luteal phase

Question 9

Which hormone is responsible for the thickening of the endometrial lining during the menstrual cycle?

Accepted Answer

Progesterone

Question 10

A patient is unable to digest lactose due to a deficiency in which enzyme?

Accepted Answer

Lactase

Question 11

Which of the following best describes the role of the large intestine in digestion?

Accepted Answer

Absorption of water and formation of feces

Question 12

Which of the following equations represents the hydrolysis of a triglyceride by pancreatic lipase?

Accepted Answer

$$\mathrm{Triglyceride} + 3\mathrm{H_2O} \xrightarrow{lipase} \mathrm{Glycerol} + 3\mathrm{Fatty\ acids}$$

Question 13

Which of the following is a correct statement about spermatogenesis?

Accepted Answer

It results in four haploid sperm cells from one diploid spermatogonium

Question 14

A patient has a blockage in the common bile duct. Which digestive process will be most affected?

Accepted Answer

Emulsification and absorption of dietary fats

Question 15

Which of the following best describes the role of the hormone LH (luteinizing hormone) in the female reproductive cycle?

Accepted Answer

Triggers ovulation and release of the oocyte

Question 16

Which of the following mechanisms is responsible for the absorption of glucose in the small intestine?

Accepted Answer

Secondary active transport with sodium ions

Question 17

Which of the following is a correct description of the process of peristalsis?

Accepted Answer

Rhythmic contraction and relaxation of smooth muscle to propel food

Question 18

A patient is unable to absorb vitamin B12 due to a lack of intrinsic factor. Which organ is most likely affected?

Accepted Answer

Stomach

Question 19

Which of the following best explains the physiological mechanism by which fats are absorbed in the small intestine?

Accepted Answer

Fats are emulsified by bile, digested by lipase, and absorbed into lacteals as chylomicrons

Question 20

Which of the following is the correct sequence of sperm movement from production to ejaculation?

Accepted Answer

Seminiferous tubules → Epididymis → Vas deferens → Urethra

Digestive and Reproductive Systems: Study Guide for Anatomy & Physiology

Study Guide - Practice Questions