give presentation on diegestive system
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Digestion is a process of breakdown of complex food molecules into simple water: soluble molecules so that it can be easily absorbed by the body. Digestion is a catabolic process, that is, it is a breakdown process to release energy.
There are two types of Digestion: Mechanical Digestion and Chemical Digestion.
Mechanical Digestion involves the physical breakdown of large food molecules into small molecules. Chemical Digestion involves breakdown of complex food molecules into small molecules in presence of digestive enzyme.
Digestion and Absorption of Carbohydrates
Digestion of carbohydrates begins in the mouth with the help of an enzyme salivary amylase. It digests the starch into maltose. Rest of the digestion of carbohydrates occurs in small intestine with the help of the enzyme pancreatic amylase secreted by pancreas. The simplest form of carbohydrates is glucose. So all the carbohydrates consumed is finally converted into glucose for absorption.
Digestion and Absorption of Proteins
Digestion of Proteins begins in the stomach. Stomach produce an enzyme Pepsinogen. Pepsinogen is an inactive form of enzyme pepsin. Inactive form of an enzyme is known as Zymogens. Pepsinogen is converted into pepsin by Hydrochloric Acid present in the stomach. Pepsin begins the process of digestion of proteins.
There are two types of Digestion: Mechanical Digestion and Chemical Digestion.
Mechanical Digestion involves the physical breakdown of large food molecules into small molecules. Chemical Digestion involves breakdown of complex food molecules into small molecules in presence of digestive enzyme.
Digestion and Absorption of Carbohydrates
Digestion of carbohydrates begins in the mouth with the help of an enzyme salivary amylase. It digests the starch into maltose. Rest of the digestion of carbohydrates occurs in small intestine with the help of the enzyme pancreatic amylase secreted by pancreas. The simplest form of carbohydrates is glucose. So all the carbohydrates consumed is finally converted into glucose for absorption.
Digestion and Absorption of Proteins
Digestion of Proteins begins in the stomach. Stomach produce an enzyme Pepsinogen. Pepsinogen is an inactive form of enzyme pepsin. Inactive form of an enzyme is known as Zymogens. Pepsinogen is converted into pepsin by Hydrochloric Acid present in the stomach. Pepsin begins the process of digestion of proteins.
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