Question

Пищеварение называют внекишечным , так как

Answer 1

У пауков переваривание пищи идёт под действием ферментов ВНЕ кишечника.

Answer 2

The Digestive System and its Functions

The digestive system is responsible for breaking down food into smaller molecules that can be absorbed and used by the body. It is often referred to as the "extraintestinal" system because it includes organs and structures outside of the intestines that play a role in digestion.

The main organs of the digestive system include the mouth, esophagus, stomach, small intestine, large intestine, liver, gallbladder, and pancreas. Each of these organs has a specific function in the process of digestion.

The Process of Digestion

The process of digestion begins in the mouth, where food is broken down into smaller pieces by chewing and mixed with saliva. The food then travels down the esophagus and enters the stomach, where it is further broken down by stomach acid and enzymes.

From the stomach, the partially digested food moves into the small intestine, where it is broken down further by enzymes produced by the pancreas and the small intestine itself. Nutrients from the digested food are absorbed into the bloodstream through the walls of the small intestine.

The remaining undigested food then moves into the large intestine, where water and electrolytes are absorbed, and the waste products are formed into feces. The feces are then eliminated from the body through the rectum and anus.

The Role of Enzymes in Digestion

Enzymes play a crucial role in the process of digestion. They are specialized proteins that help break down complex molecules into simpler ones that can be absorbed by the body. Different enzymes are responsible for breaking down different types of molecules, such as carbohydrates, proteins, and fats.

For example, amylase is an enzyme that breaks down carbohydrates into simple sugars, while proteases break down proteins into amino acids. Lipases, on the other hand, break down fats into fatty acids and glycerol.

Enzymes are produced by various organs in the digestive system, including the salivary glands, stomach, pancreas, and small intestine. They are released at specific points along the digestive tract to ensure that food is properly broken down and absorbed.

Conclusion

In summary, the digestive system is responsible for breaking down food into smaller molecules that can be absorbed and used by the body. It includes organs such as the mouth, esophagus, stomach, small intestine, large intestine, liver, gallbladder, and pancreas. Enzymes play a crucial role in the process of digestion by breaking down complex molecules into simpler ones.