Name the types of cells in the stomach and the secretionsthey produce. What are the functions of the secretions?
Name the types of cells in the stomach and the secretionsthey produce. What are the functions of the secretions?
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Name the types of cells in the stomach and the secretions
they produce. What are the functions of the secretions?
Expert Solution
Step 1
The stomach is a sac-like digestive organ present in between the esophagus and small intestine; it is concerned with the temporary storage and breakdown of food. The stomach comprises four different types of secretory cells, which are as follows –
- Mucous cells - these cells secrete mucus that is alkaline in nature; the function of this secretion is to protect the stomach’s epithelial lining against the action of acids and stress.
- Chief cells – these cells secrete the proteolytic pepsin enzyme, which aids the breakdown of proteins.
- Parietal cells – these cells secrete the strong hydrochloric acid whose function is to kill the germs and bacteria present in the ingested food.
- G cells – these cells secrete the gastrin hormone, which triggers the production of hydrochloric acid.
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