Question 1

Which structure prevents food from entering the nasopharynx during swallowing?

Accepted Answer

Uvula

Question 2

A patient presents with jaundice due to a blockage in the duct that carries bile from the gallbladder to the duodenum. Which duct is most likely obstructed?

Accepted Answer

Common bile duct

Question 3

Which anatomical feature is responsible for preventing the backflow of stomach contents into the esophagus?

Accepted Answer

Cardiac sphincter

Question 4

During digestion, which organ is primarily responsible for the absorption of nutrients?

Accepted Answer

Small intestine

Question 5

If the pyloric sphincter fails to function properly, which of the following is most likely to occur?

Accepted Answer

Undigested food will pass too quickly into the duodenum

Question 6

Which of the following correctly lists the order in which food passes through the sections of the large intestine?

Accepted Answer

Ascending colon, transverse colon, descending colon, sigmoid colon

Question 7

A patient has difficulty digesting fats due to a malfunction in the organ that produces bile. Which organ is affected?

Accepted Answer

Liver

Question 8

Which structure connects the pharynx to the stomach?

Accepted Answer

Esophagus

Question 9

Which of the following is NOT a function of the pancreas in the digestive system?

Accepted Answer

Storing bile

Question 10

A blockage in the ileocecal sphincter would most directly affect the movement of contents between which two regions?

Accepted Answer

Ileum and cecum

Question 11

Which anatomical structure is responsible for the initial mechanical breakdown of food?

Accepted Answer

Mouth

Question 12

Which ligament attaches the liver to the anterior abdominal wall?

Accepted Answer

Falciform ligament

Question 13

A patient is diagnosed with achalasia, a condition where the cardiac sphincter fails to relax. What symptom is most likely?

Accepted Answer

Difficulty swallowing

Question 14

Which part of the digestive tract is primarily responsible for water absorption?

Accepted Answer

Large intestine

Question 15

Which structure is located between the oral cavity and the esophagus?

Accepted Answer

Oropharynx

Question 16

If the common bile duct is blocked, which of the following will most likely occur?

Accepted Answer

Bile will accumulate in the liver

Question 17

Which of the following is the correct formula for calculating the surface area ($$A) of $$the small intestine, given its length ($$l) $$and average diameter ($$d$$)?

Accepted Answer

$$A = \pi d l$$

Question 18

A patient has a tumor in the sigmoid colon. Which symptom is most likely to develop first?

Accepted Answer

Constipation

Question 19

Which structure is responsible for storing and concentrating bile?

Accepted Answer

Gallbladder

Question 20

Which anatomical feature marks the transition from the small intestine to the large intestine?

Accepted Answer

Ileocecal sphincter

Digestive System: Key Structures and Terms for Lab Exam

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