HUMAN PHYSIOLOGY
DIGESTION AND ABSORPTION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Endothelial cells
|
|
|
Goblet cells
|
|
|
Epithelial cells
|
|
|
Smooth muscle cells
|
Detailed explanation-1: -Disaccharidases such as maltase break down disaccharides into monosaccharides in the small intestine. Some of these are attached to the epithelial cells lining the ileum and are known as membrane-bound disaccharidases.
Detailed explanation-2: -Final answer: The enzymes secreted by the ileum are maltase, sucrase, lactase, and peptidase.
Detailed explanation-3: -Disaccharidases are located in the brush border membrane of mature enterocytes of the small intestine, and their activities are the greatest in the proximal and mid-jejunum. The two main disaccharidases found in humans are -galactosidase (lactase) and -glucosidases (sucrase, isomaltase, and glucoamylase).
Detailed explanation-4: -Some other common enzymes are made in the small intestine, including: Lactase (breaks down lactose) Sucrase (breaks down sucrose)
Detailed explanation-5: -Membrane-bound dipeptidases in the ileum cleave dipeptides into their two component amino acids prior to absorption.