Question

1. How do we digest our food?​

Answer 1

Answer:

Digestion works by moving food through the GI tract. Digestion begins in the mouth with chewing and ends in the small intestine. As food passes through the GI tract, it mixes with digestive juices, causing large molecules of food to break down into smaller molecules.

Explanation:

Answer 2

Digestion is the process by which bigger molecules are broken down into smaller molecules that may be easily absorbed by the body.

Explanation:

The process of digestion starts with

1. Mouth: The food is chewed and mixed with certain enzymes like lysozyme and amylase in the mouth. Then the food is swallowed and pushed into the oesophagus.

2. Oesophagus: The oesophagus begins the peristalsis movement and the food is transported to the stomach.

3. Stomach: The stomach has an acidic pH due to the presence of HCl and the acidic pH is necessary for the activation of the enzymes present in the stomach like pepsin. The food is mixed with all the enzymes and forms a chyme. The chyme is pushed into the small intestine.

4. Small Intestine: Pancreatic, gallbladder, and liver digestive fluids drain into the small intestine and mix with food. Absorption occurs in the small intestine, where nearly all water is absorbed. Peristalsis then transports food waste to the big intestine.

5. Large Intestine: All additional nutrients and beneficial components are absorbed in the large intestine. The remaining water is absorbed in the large intestine, and the waste solidifies into faeces. The faeces are stored in the large intestine's rectum until defecation.