Question 1

Which layer of the gastrointestinal tract is primarily responsible for absorption of nutrients and contains specialized structures such as villi and microvilli?

Accepted Answer

Mucosa

Question 2

A patient presents with inflammation of the peritoneal cavity. Which anatomical structure is directly affected?

Accepted Answer

The space between the parietal and visceral peritoneum

Question 3

During a dental examination, a dentist notes erosion of the hardest substance in the human body. Which structure is being referred to?

Accepted Answer

Enamel

Question 4

Which of the following correctly matches the region of the stomach with its function?

Accepted Answer

Fundus: Temporary storage of food

Question 5

A patient has difficulty swallowing due to a malfunctioning sphincter at the junction between the esophagus and stomach. Which sphincter is affected?

Accepted Answer

Gastroesophageal sphincter

Question 6

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

Accepted Answer

Contract to form haustra, aiding in segmental movement

Question 7

If the submandibular glands are damaged, which process is most likely to be impaired?

Accepted Answer

Production of saliva for initial carbohydrate digestion

Question 8

Which of the following structures is NOT part of the small intestine?

Accepted Answer

Cecum

Question 9

A patient with liver disease shows impaired bile flow. Which duct is most likely obstructed if bile cannot reach the gallbladder?

Accepted Answer

Cystic duct

Question 10

Which formula best represents the relationship between surface area ($$A$$), villus height ($$h$$), and villus width ($$w) in $$the small intestine, assuming each villus is approximately cylindrical?

Accepted Answer

$$A = 2 \pi w h$$

Question 11

Which of the following is the correct sequence of layers from the lumen outward in the digestive tract?

Accepted Answer

Mucosa → Submucosa → Muscularis externa → Serosa

Question 12

A patient is diagnosed with a disorder affecting the periodontal ligaments. Which function is most likely compromised?

Accepted Answer

Anchoring teeth to the alveolar socket

Question 13

Which anatomical feature increases the absorptive surface area of the small intestine the most?

Accepted Answer

Microvilli

Question 14

A patient has a blockage in the pancreatic duct. Which process is most directly affected?

Accepted Answer

Delivery of digestive enzymes to the duodenum

Question 15

Which lobe of the liver is located most anteriorly and is separated from the right lobe by the falciform ligament?

Accepted Answer

Left lobe

Question 16

If the pyloric sphincter fails to open properly, which physiological consequence is most likely?

Accepted Answer

Delayed gastric emptying into the duodenum

Question 17

Which formula would you use to estimate the total number of villi ($$N) in a $$segment of small intestine, given the segment length ($$L$$), villus density ($$D$$), and villus height ($$h$$)?

Accepted Answer

$$N = D 	imes L$$

Question 18

Which structure is responsible for the formation of haustra in the colon?

Accepted Answer

Taenia coli

Question 19

A patient with a damaged variform appendix is at risk for which complication?

Accepted Answer

Infection spreading to the peritoneal cavity (peritonitis)

Question 20

Which of the following best describes the function of the epiploic appendages?

Accepted Answer

Fat storage along the colon

BIO 108 Digestive System Lab Study Guide

Study Guide - Practice Questions

Study Guide - Flashcards