Test Your Knowledge Identify the cells of the gastric mucosa that secrete: (a) H

Question

Test Your Knowledge Identify the cells of the gastric mucosa that secrete: (a) HCl (b) pepsinogen (c) histamine The three components of the mucosa layer of the digestive tract are the the 1. 2· and the 3. Microscopic fingerlike projections of mucosa in the small intestine are called 4. The foldings of the plasma membrane of intestinal epithelial cells that produce the "brush border" are called 5. Blood is transported from the intestine to the liver in a large vessel known as the 6. Once blood has reached the liver, it travels through large capillaries called 7. The microscopic exocrine units of the pancreas are called : the endocrine structures are known as the 8. The glands in the duodenum that secrete an alkaline mucus:

Explanation / Answer

Answer 1.

A. Oxyntic or parietal cells

B. Zymogenic cells or chief cellls

C. Enterochromaffin- like cells.

Answer 2. Epithelium, lamina propria and muscularis Mucosae.

Answer 3. Villi, means for absorption of the food.

Answer 4. Microvilli

Answer 5. Hepatic portal vein

nswer 6. Hepatic veins.

Answer 7. Alpha islets of langerhans, beta islets of langerhans.

Answer 8. Brunner's glands

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