Which layer of the alimentary canal contains the smooth muscle that produces peristalsis?
Correct answer: C. Muscularis externa
- A. Mucosa
- B. Submucosa
- C. Muscularis externa
- D. Serosa
Explanation
The muscularis externa contains inner circular and outer longitudinal smooth muscle layers that move and mix intestinal contents. The mucosa lines the lumen, the submucosa contains vessels and nerves, and the serosa forms the outer covering.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Digestive System
The digestive system covers the structure and functions of the alimentary canal from mouth to anus, along with the liver, gallbladder and pancreas. It explains mechanical and chemical digestion, the action of major enzymes, absorption through intestinal villi, and how digestion differs from absorption and assimilation.
Practise Digestive System
40 free Digestive System MCQs from Anatomy and Physiology for Nursing, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Anatomy and Physiology for Nursing questions like this
Anatomy and Physiology for Nursing is on 4 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Digestive System questions
A patient has a large meal and asks how the digestive tract moves food forward without gravity. Which explanation is correct?
Which part of the digestive tract is the main site where intestinal contents are mixed with bile and pancreatic juice?
A patient has reduced pancreatic lipase secretion but normal bile production. Which problem is most likely?
Which cells in the stomach secrete hydrochloric acid and intrinsic factor?
After a fatty meal, which hormone causes gallbladder contraction and increases pancreatic enzyme secretion?
Which structure normally prevents the backflow of colonic contents into the ileum?