Multiple Choice
The stomach and which other organ are primarily responsible for digesting food?
189
views
23. The Digestive System
Introduction to the Digestive System
Struggling with Anatomy & Physiology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which layer of the gastrointestinal (GI) tract comes into direct contact with food?
A
Muscularis externa
B
Serosa
C
Mucosa
D
Submucosa
Verified step by step guidance1
Understand the structure of the gastrointestinal (GI) tract, which consists of four main layers: mucosa, submucosa, muscularis externa, and serosa.
Recognize that the mucosa is the innermost layer of the GI tract and is directly involved in the absorption and secretion processes.
Identify that the mucosa is composed of three sub-layers: the epithelium, lamina propria, and muscularis mucosae.
Acknowledge that the epithelium, which is part of the mucosa, is the specific layer that comes into direct contact with the food as it passes through the GI tract.
Conclude that the mucosa is the correct answer because it is the layer that directly interfaces with the contents of the GI tract, including food.
6:28mWatch next
Master Organs of the Digestive System with a bite sized video explanation from Bruce Bryan
Start learningRelated Videos
Related Practice
Introduction to the Digestive System practice set
Problem sets built by lead tutorsExpert video explanations