Question

Select the option that represents constituents of
succus entericus only.
Lactase, sucrase, maltase
Nuclease, nucleotidase, nucleosidase
Trypsin, pepsin, enterokinase
Amylase, lipase, rennin​

Answer 1

Answer:

Succus entericus or intestinal juice (pH = 7.8) refers to the secretion of glands of small intestine. It contains many enzymes viz maltase, isomaltase, lipase, lactase, α-dextrinase, enterokinase, aminopeptidase, nucleotidase, nucleosidase, etc. for the digestion of carbohydrates, proteins, fats, nucleic acids etc.

Answer 2

Lactase, Sucrase, Maltase.

• Succus entericus, or Intestinal Juice, contain enzymes like disaccharidases (Maltase, Lactase, Sucrase), dipeptidases, lipases, and nucleosidases.
• Enterokinase is synthesized by the enterocytes of the proximal small intestine and can be found in the brush border membrane and as a soluble form in intestinal fluid.
• Trypsin is an enzyme that helps us digest protein. In the small intestine, trypsin breaks down proteins, continuing the process of digestion that began in the stomach. Trypsin is produced by the pancreas in an inactive form called trypsinogen.
• Rennin is an enzyme synthesized by the chief cells of the stomach. It is a hormone synthesized by the juxtaglomerular cells of the kidney. It plays a role in the digestion of coagulate milk in the stomach. Rennin is the enzyme present in the gastric juice of only infants. In adults, it is replaced by pepsin.
• Pepsin is a stomach enzyme that serves to digest proteins found in ingested food. Gastric chief cells secrete pepsin as an inactive zymogen called pepsinogen.
• Nuclease is found in the pancreatic juice.
• The pancreas is the primary organ responsible for the production and release of Amylase and Lipase.

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