the given diagram shows the internal structure of a villus.label the parts 1 to 4.give the function of part marked 1.what is the role of lacteal.name the glands present at the junction of two villi.what is their function.
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the internal structure show the diagram ...I don't know
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1. Epithelial cell
2. Capillary network
3. Crypt of lieberkun
4. Lacteal
- Epithelial cells are cells that come from surfaces of your body, such as your skin, blood vessels, urinary tract, or organs. They serve as a barrier between the inside and outside of your body, and protect it from viruses. A small number of epithelial cells in your urine is normal.
- A lacteal is a lymphatic capillary that absorbs dietary fats in the villi of the small intestine. Triglycerides are emulsified by bile and hydrolyzed by the enzyme lipase, resulting in a mixture of fatty acids, di- and monoglycerides.
- Brunner's glands (or duodenal glands) are compound tubular submucosal glands found in that portion of the duodenum which is above the hepatopancreatic sphincter (a.k.a. sphincter of Oddi).
- Brunner's glands are located in the submucosa of the duodenum. They secrete an alkaline fluid containing mucin, which protects the mucosa from the acidic stomach contents entering the duodenum.
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