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Digestive System Basics

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Questions and Answers

What is the function of the mucus produced by the goblet cells in the epithelium of the stomach and intestines?

To regulate blood pressure
To absorb nutrients
To protect the organs from digestive enzymes and ease food passage (correct)
To produce digestive enzymes

What type of epithelium is found in the mucous membrane of the mouth, pharynx, esophagus, and anal canal?

Keratinized stratified squamous epithelium
Non-keratinized stratified squamous epithelium (correct)
Non-ciliated simple columnar epithelium
Ciliated simple columnar epithelium

What type of connective tissue is found in the lamina propria?

Dense irregular connective tissue
Areolar connective tissue (correct)
Adipose tissue
Blood tissue

What is the function of the submucosa?

To bind the mucosa to the muscularis (D) Signup and view all the answers

What type of muscle is found in the muscularis of the lower 1/3 of the esophagus, stomach, and intestines?

Smooth muscle (B) Signup and view all the answers

What is the arrangement of the smooth muscle in the muscularis externa?

Inner circular layer and outer longitudinal layer (D) Signup and view all the answers

What is the primary function of digestion in the human body?

To break down large food molecules into smaller molecules that the body cells can absorb and use (B) Signup and view all the answers

What is the correct sequence of organs in the GI tract?

Mouth, pharynx, esophagus, stomach, small intestine, large intestine (A) Signup and view all the answers

How many layers are present in the GI tract?

4 layers: mucosa, submucosa, muscularis, and serosa/adventicia (B) Signup and view all the answers

What is the primary function of the accessory structures in the digestive system?

To aid in the mechanical and chemical digestion of food (C) Signup and view all the answers

What is the function of the mucosa in the GI tract?

To line the lumen of the GI tract from the mouth to the anus (D) Signup and view all the answers

What is the term for the process of moving food through the GI tract?

Propulsion (B) Signup and view all the answers