Answer:
through the villi of the small intestine
Explanation:
Absorption is the process by which end products of digestion and other nutrients as well as water are taken up from the intestines across the epithelium into the bloodstream.
It takes place in the small intestines which are long and coiled and whose surface area is greatly increased by numerous finger like structures called villi that projects into the lumen. The lining of the villi bears numerous microvilli which further increase the surface area for absorption.
Explanation:
Most absorption of the end products of digestion
into the circulatory system in humans occurs
(4) through the villi of the small intestine
After digestion, the process of absorption occurs within villi of the small intestine. Villi are small finger-like projections from epithelial cells of the small intestine; due to the projections, they have increased surface areas for absorption. Absorption involves several processes such as
Further Explanation:
During digestion, food is chemically and mechanically broken down into smaller particles. For instance, with lipids, this begins in the mouth, where food is mechanically crushed, and mixed with saliva to allow water based enzymes like lingual lipase to work; next in the stomach the enzyme gastric lipase acts on lipids, breaking them up into their components. Then phospholipids, bile acids, bilirubin, and cholesterol are combined into bile in the liver, which when secreted into the duodenum of the small intestine; this comes from its storage site, the gall bladder, and functions as an emulsifier or as a detergent. These hold the fats and water together and increase the surface area of lipids, which can be further digested by enzymes so the nutrients are further broken down for absorption into the bloodstream.
After digestion, the process of absorption occurs within villi of the small intestine. This involves several processes such as
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