Question

Explanation for excretory system of class 7

Answer 1

Excretory System – Ingests food and breaks it down into usable nutrients. Excretes solid waste products. Includes the mouth, esophagus, stomach, and intestines.
The digestive system takes in food and processes it to obtain useful nutrients.

When food enters the body, it is first chewed by the mouth to break it down into a mush that stomach acids can penetrate.

In the stomach, it is treated with acids and special enzymes that break the food’s components down into more useful forms.

Finally, it passes through the intestines: being squeezed through the huge surface area of the intestines’ narrow tubes ensures that as many useful nutrients are extracted from the food as possible.

The liver helps by releasing substances that assist the stomach and intestines in breaking down food, and by breaking down toxic substances in the blood.

Once these nutrients have been extracted from foods, they are distributed to the body’s cells by the circulatory system.

The digestive/excretory system also expels solid waste components of our food that our body can’t use in the form of fecal matter.