Anatomy of Stomach: Pyloric Glands and Gastric Glands

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What is the main function of peptidases in succus entericus?

Convert triglycerides into fatty acids

Convert amino acids into peptides

Convert monosaccharides into disaccharides

Convert peptides into amino acids (correct)

What is the role of lactase, sucrase, and maltase in the small intestine?

Convert disaccharides into monosaccharides (correct)

Convert peptides into amino acids

Convert amino acids into peptides

Convert glucose into glycogen

What is the function of intestinal lipase in the small intestine?

Convert disaccharides into monosaccharides

Convert triglycerides into fatty acids and glycerol (correct)

Convert monosaccharides into disaccharides

Convert peptides into amino acids

What is the role of mucus in the small intestine?

To protect the intestinal wall from acid chyme Signup and view all the answers

What is the function of defensins in the small intestine?

To kill phagocytosed bacteria Signup and view all the answers

What is the role of intrinsic factor in the small intestine?

To facilitate the absorption of vitamin B12 Signup and view all the answers

What is the primary function of gastrin, a hormone secreted by G-cells?

Regulation of gastric secretion Signup and view all the answers

Which type of cell is responsible for secreting intrinsic factor, necessary for B12 absorption?

Parietal cells Signup and view all the answers

What is the main product secreted by chief cells in the gastric glands?

Pepsinogen Signup and view all the answers

Which type of cell is located in the superior 1/3 of the gastric glands?

Mucous neck cells Signup and view all the answers

What is the name of the structure where the gastric glands open into the stomach cavity?

Gastric pits Signup and view all the answers

Where are G-cells, which secrete gastrin, located?

Pyloric glands Signup and view all the answers

What is the approximate height of the intestinal villi?

1 mm Signup and view all the answers

What type of cells line the intestinal villi and glands?

Columnar cells Signup and view all the answers

What is the function of the microvilli in the intestinal villi?

To increase the surface area of the mucous membrane Signup and view all the answers

What is the main function of the enterocytes in the intestinal villi?

To secrete enzymes for digestion Signup and view all the answers

Where do the intestinal glands open into?

The lumen of the intestine Signup and view all the answers

What is the name of the central channel within each villus that opens into lymphatic vessels?

Lacteal Signup and view all the answers

What is the average lifespan of a red blood cell?

120 days Signup and view all the answers

What type of hormones are catabolized by the liver?

Peptide hormones Signup and view all the answers

What is the purpose of reticuloendothelial cells in the liver?

To play a defensive role in the body Signup and view all the answers

How do reticuloendothelial cells of the liver remove foreign bodies?

Through phagocytosis Signup and view all the answers

What is the result of detoxification in the liver?

Removal of toxic property of harmful substances Signup and view all the answers

What is the fate of fat-soluble drugs in the liver?

They are converted into water-soluble substances Signup and view all the answers

What is the primary function of bile salts in the digestion process?

To emulsify fats and make them soluble in water Signup and view all the answers

What percentage of bile salts from the intestine are transported to the liver through enterohepatic circulation?

90% to 95% Signup and view all the answers

What is the result of unemulsified fat in the intestine?

It is eliminated in feces Signup and view all the answers

What is the term for the transport of substances from the small intestine to the liver through the portal vein?

Enterohepatic circulation Signup and view all the answers

What is formed when bile acids combine with sodium or potassium ions?

Sodium or potassium glycocholate and sodium or potassium taurocholate Signup and view all the answers

What is the role of bile salts in reducing the surface tension of fats?

Emulsifying fats through detergent action Signup and view all the answers