Jerry Had an Ulcer Affecting the Innermost Epithelium of the Stomach

question 60

Multiple Choice

Jerry had an ulcer affecting the innermost epithelium of the stomach facing the lumen. Which layer of the alimentary canal was ulcerated?

• A) submucosa
• B) serosa (adventitia)
• C) muscularis externa
• D) mucosa

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Definitions:

Postganglionic Axons

The axons of neurons that relay signals from the autonomic ganglia to the target organs in the peripheral nervous system.

Preganglionic Fibers

Nerve fibers that extend from the central nervous system to the ganglia in the autonomic nervous system.

Pectoralis Major

A large muscle in the upper chest that plays a key role in the movement of the shoulder joint, including flexion, adduction, and internal rotation.

Autonomic Nervous System

The part of the nervous system that controls involuntary bodily functions, including heart rate, digestion, and respiratory rate.