Question

Describe these small intestine structures and their functions: intestinal glands -

Answer 1

The intestinal glands in the small intestine secrete intestinal juice aiding digestion, while villi and microvilli increase the surface area for nutrient absorption, with nutrients transported to the body via the bloodstream or lymphatic system.

Step-by-step explanation:

The small intestine is an essential organ for the digestion and absorption of nutrients. The intestinal glands, also known as crypts of Lieberkühn, are located in the mucosa between the villi. These glands produce intestinal juice, a slightly alkaline mixture of water and mucus, which helps in the final stages of digestion. Specifically, they secrete about 0.95 to 1.9 liters of this juice daily, aiding in the digestion of chyme and the absorption of nutrients into the bloodstream.

Villi in the small intestine play a crucial role in increasing the mucosal surface area, allowing for efficient absorption. They contain tiny projections known as microvilli that further augment the surface area and carry brush border enzymes to complete the digestion of carbohydrates and proteins. Nutrients absorbed by the villi are transported to the body through the blood via the hepatic portal vein or through the lymphatic system in the case of fats.

Answer 2

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.here's your answer_____⤵

♦ The small intestine is the part of the gastrointestinal tract where much of the digestion and absorption of food takes place.
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♦Brunner’s glands: Compound, tubular, submucosal glands found in that portion of the duodenum that is above the hepatopancreatic sphincter (sphincter of Oddi).

♦Peyer’s patches: Patches of lymphoid tissue or lymphoid nodules on the walls of the ileum in the small intestine.

♦intestinal wall: The wall of the small intestine is composed of four layers, from the outside to the inside: serosa, muscularis, submucosa, and mucosa.
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