Question 1

Which of the following best describes the primary function of the folds (plicae, villi, and microvilli) in the small intestine?

Accepted Answer

To maximize nutrient absorption by increasing surface area

Question 2

Which process breaks down polymers into monomers during digestion?

Accepted Answer

Hydrolysis

Question 3

Which of the following is NOT considered an essential nutrient for humans?

Accepted Answer

Glucose

Question 4

What is the correct sequence of organs in the alimentary canal from mouth to anus?

Accepted Answer

Oral cavity, pharynx, esophagus, stomach, small intestine, large intestine, anus

Question 5

Which enzyme is responsible for the chemical digestion of carbohydrates in the oral cavity?

Accepted Answer

Amylase

Question 6

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

Accepted Answer

Emulsification of lipids in the small intestine

Question 7

Which structure is more ventral in the human body?

Accepted Answer

Trachea

Question 8

Which of the following best explains why humans must digest food before absorption?

Accepted Answer

Cells can only absorb nutrients in their monomeric form

Question 9

Which hormone is released by the duodenal mucosa in response to acid chyme and stimulates the pancreas to release bicarbonate?

Accepted Answer

Secretin

Question 10

Which of the following is the correct formula for the hydrolysis of a disaccharide such as maltose?

Accepted Answer

$$\mathrm{C$$_{12}$$H_{22}O$$_{11}} + H_2O \rightarrow 2\,\mathrm{C_6H_{12}$$O_6$$}$

Question 11

Which of the following best describes the role of chylomicrons in lipid digestion?

Accepted Answer

They transport lipids from the intestinal cells into the lymphatic system

Question 12

Which layer of the gut histology is responsible for peristalsis?

Accepted Answer

Muscularis

Question 13

Which of the following statements about the large intestine is TRUE?

Accepted Answer

It stores and eliminates waste and absorbs water and minerals

Question 14

Which of the following enzymes is secreted by chief cells in the stomach?

Accepted Answer

Pepsinogen

Question 15

A person with a damaged liver may have difficulty with which of the following processes?

Accepted Answer

Emulsification of fats due to reduced bile production

Question 16

Which of the following is a correct match between macromolecule and its monomer?

Accepted Answer

Carbohydrate — Monosaccharide

Question 17

Which of the following best explains the difference in digestive tract complexity between carnivores and herbivores?

Accepted Answer

Herbivores have more complex tracts due to the need to break down cellulose

Question 18

Which of the following is the correct pathway for lipid absorption from the small intestine?

Accepted Answer

Epithelial cell → lacteal → lymphatic vessel → heart

Question 19

Which of the following is a function of the hormone cholecystokinin (CCK) in digestion?

Accepted Answer

Stimulates the release of bile from the gallbladder

Animal Nutrition and Digestive System: Chapter 41 Study Notes

Study Guide - Practice Questions