Bio 252 Module 3 Human A & P Ii

BIOL 252 Module 3 | Human Anatomy & Physiology II
w/Lab Exam Q&A | Portage Learning
These are original practice questions written for study. They are not official BIOL 252,
Portage Learning, or university exam questions and are not copied from any
copyrighted question bank. They cover common BIOL 252 Module 3 | Human Anatomy
& Physiology II topics, especially the digestive system, metabolism, and related
clinical applications.



Question 1:
Which organ is the primary site of nutrient absorption?

A. Stomach
B. Duodenum
C. Jejunum
D. Colon

Correct answer: C
Rationale: The jejunum is the primary site of nutrient absorption in the small intestine.



Question 2:
Which structure connects the pharynx to the stomach?

A. Trachea
B. Esophagus
C. Larynx
D. Duodenum

Correct answer: B
Rationale: The esophagus is a muscular tube that transports food from the pharynx to
the stomach.



Question 3:
Which sphincter prevents reflux of stomach contents into the esophagus?

A. Pyloric sphincter
B. Ileocecal valve
C. Lower esophageal sphincter
D. Anal sphincter

,Correct answer: C
Rationale: The lower esophageal sphincter (LES) prevents acid reflux into the
esophagus.



Question 4:
Which cells in the stomach secrete hydrochloric acid?

A. Chief cells
B. Parietal cells
C. Goblet cells
D. Enteroendocrine cells

Correct answer: B
Rationale: Parietal cells secrete HCl and intrinsic factor.



Question 5:
Which cells in the stomach secrete pepsinogen?

A. Chief cells
B. Parietal cells
C. Goblet cells
D. Enteroendocrine cells

Correct answer: A
Rationale: Chief cells secrete pepsinogen, which converts to pepsin in acidic
conditions.



Question 6:
Which substance is essential for vitamin B12 absorption?

A. Pepsin
B. Intrinsic factor
C. Bile
D. Amylase

Correct answer: B
Rationale: Intrinsic factor, secreted by parietal cells, is required for B12 absorption in
the ileum.

, Question 7:
Which organ produces bile?

A. Gallbladder
B. Liver
C. Pancreas
D. Stomach

Correct answer: B
Rationale: The liver produces bile, which is stored and concentrated in the gallbladder.



Question 8:
Which organ stores and concentrates bile?

A. Liver
B. Gallbladder
C. Pancreas
D. Duodenum

Correct answer: B
Rationale: The gallbladder stores and concentrates bile until needed for fat digestion.



Question 9:
Which enzyme begins starch digestion in the mouth?

A. Pepsin
B. Salivary amylase
C. Lipase
D. Trypsin

Correct answer: B
Rationale: Salivary amylase begins the breakdown of starches into simpler sugars.



Question 10:
Which enzyme digests proteins in the stomach?

A. Amylase
B. Lipase
C. Pepsin
D. Trypsin