Human Digestive System

Liver produces the fluid called bile, which contains bile salts.

Hydrochloric acid does not activate trypsinogen, an enzyme in the small intestine.

Mucus protects the stomach wall.

Gall bladder stores bile.

Rhythmic wave-like movement of the food through the alimentary tract is called peristalsis.

Liver secretes bile.

Salivary amylase helps to break down starch.

Lipase is a pancreatic enzyme that catalyses the breakdown of fats to fatty acids and glycerol or other alcohols.

Salivary amylase is responsible for breaking starch into polypeptides. The enzyme works best at pH 6.9. At this level, it is slightly acidic in nature.

It is a part of the large intestine and does not produce any enzyme. It only produces mucus.

It is present between the oesophagus and the stomach. It is also called as the gastro-oesophageal sphincter.

Diffused patches of lymphoid tissues are present throughout the small intestine and are aggregated in the ileum to form Peyer's patches.

Pepsinogen is converted into pepsin at an acidic pH of 1.8 in gastric gland of the stomach.

This hormone is secreted by the epithelium of stomach. It is responsible for the stimulation of HCl and pepsin.

Most of the digestion takes place in the duodenum. It is where pancreatic juice and bile mix with the food chyme.