Q: Which equation best represents the chemical digestion of starch by pancreatic alpha-amylase?

$$\text{Starch} + \text{H}_2\text{O} \xrightarrow{\text{Pancreatic alpha-amylase}} \text{Maltose}$$

Q: Which equation best represents the conversion of pepsinogen to pepsin in the stomach?

$$\text{Pepsinogen} + \text{HCl} \rightarrow \text{Pepsin}$$

Question 1

Which layer of the digestive tract is primarily responsible for peristalsis and segmentation movements?

Accepted Answer

Muscular layer

Question 2

A patient presents with difficulty swallowing due to a malfunction of the lower esophageal sphincter. Which phase of deglutition is most directly affected?

Accepted Answer

Esophageal phase

Question 3

Which of the following best describes the function of the myenteric plexus?

Accepted Answer

Coordinates muscular contractions for motility

Question 4

During the cephalic phase of gastric secretion, which hormone is released in response to the sight, smell, or thought of food?

Accepted Answer

Gastrin

Question 5

A patient with congenital megacolon is most likely to experience which of the following symptoms?

Accepted Answer

Chronic constipation

Question 6

Which structure increases the surface area for absorption in the small intestine by forming finger-like projections?

Accepted Answer

Villi

Question 7

A patient with jaundice is most likely suffering from a dysfunction in which organ?

Accepted Answer

Liver

Question 8

Which of the following best describes the process of emulsification in the digestive system?

Accepted Answer

Mixing fats with bile to increase surface area for lipase action

Question 9

If a patient has a blockage in the common bile duct, which of the following would most likely occur?

Accepted Answer

Impaired fat digestion and absorption

Question 10

Which equation best represents the chemical digestion of starch by pancreatic alpha-amylase?

Accepted Answer

$$	ext{Starch} + 	ext{H}_2	ext{O} \xrightarrow{	ext{Pancreatic alpha-amylase}} 	ext{Maltose}$$

Question 11

A patient with a deficiency in intrinsic factor will most likely develop which condition?

Accepted Answer

Pernicious anemia

Question 12

Which of the following is a correct sequence for the passage of food through the digestive tract?

Accepted Answer

Oral cavity → Pharynx → Esophagus → Stomach → Small intestine → Large intestine

Question 13

Which of the following best explains the function of the brush border in the small intestine?

Accepted Answer

Provides enzymes for final stages of nutrient breakdown

Question 14

A patient with ankyloglossia may have difficulty with which of the following?

Accepted Answer

Speech articulation

Question 15

Which of the following structures is NOT part of the portal triad in the liver?

Accepted Answer

Central vein

Question 16

A patient with gallstones blocking the cystic duct would most likely experience which symptom?

Accepted Answer

Pain after eating fatty meals

Question 17

Which of the following best describes the role of enteroendocrine cells in the digestive system?

Accepted Answer

Secrete hormones that regulate digestion

Question 18

Which equation best represents the conversion of pepsinogen to pepsin in the stomach?

Accepted Answer

$$	ext{Pepsinogen} + 	ext{HCl} ightarrow 	ext{Pepsin}$$

Question 19

A patient with a deficiency in pancreatic lipase would most likely have difficulty digesting which type of macromolecule?

Accepted Answer

Fats

Question 20

Which of the following best describes the function of the teniae coli in the large intestine?

Accepted Answer

Contract to form haustra and facilitate compaction

Digestive System: Essential Vocabulary and Concepts

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