NEET (NTA)-National Eligibility cum Entrance Test (Medical) Biology Human Physiology-Digestion and Absorption Revision (Page 2 of 23)

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Digestion in GIT - Digestion of protein


Main is food proteins, desquamated epithelial cells and enzymes of digestive juices. Proteins are made up of amino acids so during the process of digestion they are broken down again to amino acids. Enzymes that hydrolyse proteins are called proteases or peptidases. Many of these enzymes are secreted in their inactive forms called proenzymes as their active forms would hydrolyse cellular and extracellular proteins of the organism itself. Inactive forms are converted to activ

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Absorption from GIT - Types

  • Absorption is the process by which the end products of digestion of nutrients, minerals, vitamin, water etc. are absorbed through the intestinal mucosa into the blood and lymph. Most of the minerals are absorbed from small intestine. In man and other vertebrates, the intestines are greatly folded to increase the surface area of absorption.
  • Many finger like projections called villi are present in the small intestine. Each villus has a network of blood capillaries and a network of lymp

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