Explain the role of following in digestion: a) Salivary glands b) HCl c)Pancreas d)Liver e) Villi
Answers
Answer:
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Explanation:
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Explanation:
1) Salivary gland :- Role of saliva in the digestion of food
The role of saliva in the digestion of food are,
It moistens the food for easy swallowing.
It contains a digestive enzyme called salivary amylase, which breaks down starch into sugar.
Lubricates and moistens food, thus aiding in swallowing
Aids in food particles to stick together for the formation of the bolus, so that they cab swallowed as a mass
Cleans the mouth, tending to destroy germs to prevent tooth decay
Brings about the conversion of starch into maltose through the enzyme ptyalin
2)HCL :- The HCl in the stomach denatures salivary amylase and other proteins by breaking down the structure and, thus, the function of it. HCl also converts pepsinogen to the active enzyme pepsin. Pepsin is a protease, meaning that it cleaves bonds in proteins. It breaks down the proteins in food into individual peptides (shorter segments of amino acids).
3) pancreas :- pancreas plays a big role in digestion. It is located inside your abdomen, just behind your stomach. It's about the size of your hand. During digestion, your pancreas makes pancreatic juices called enzymes. These enzymes break down sugars, fats, and starches. Your pancreas also helps your digestive system by making hormones. These are chemical messengers that travel through your blood. Pancreatic hormones help regulate your blood sugar levels and appetite, stimulate stomach acids, and tell your stomach when to empty.
4)Liver :- The liver has many functions, but its main job within the digestive system is to process the nutrients absorbed from the small intestine. Bile from the liver secreted into the small intestine also plays an important role in digesting fat and some vitamins.
The liver has many functions, but its main job within the digestive system is to process the nutrients absorbed from the small intestine. Bile from the liver secreted into the small intestine also plays an important role in digesting fat and some vitamins.The liver is the body's chemical "factory." It takes the raw materials absorbed by the intestine and makes all the various chemicals the body needs to function.
The liver has many functions, but its main job within the digestive system is to process the nutrients absorbed from the small intestine. Bile from the liver secreted into the small intestine also plays an important role in digesting fat and some vitamins.The liver is the body's chemical "factory." It takes the raw materials absorbed by the intestine and makes all the various chemicals the body needs to function.The liver also detoxifies potentially harmful chemicals. It breaks down and secretes many drugs that can be toxic to the body.
5) Villi :- Their function is to increase the surface area of the small intestinal wall for absorption of the digested food.
Their function is to increase the surface area of the small intestinal wall for absorption of the digested food.These projections absorb the protein molecules and help in the transfer of the proteins to all cells and tissues.
Their function is to increase the surface area of the small intestinal wall for absorption of the digested food.These projections absorb the protein molecules and help in the transfer of the proteins to all cells and tissues.Many blood vessels are present within these villi, that help in the absorption of digested food and carry it to the bloodstream. Later, from the bloodstream, the absorbed food is delivered to each and every cell of the body.
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