Question

Name two organs of the digestive tract where mechanical food breakdown processes are very important. Name one organ that is primarily a food conduit. Name the organ where protein digestion begins.

Answer 1

Mechanical food breakdown occurs in the mouth and stomach.

Esophagus is the primary food conduit.

Protein digestion begins in the stomach.

Step-by-step explanation:

Mechanical food breakdown or the mechanical digestion is the physical breakdown of large pieces of food into small pieces. The mechanical breakdown of food occurs in :

1. the mouth- by the process of mastication or chewing

2. the stomach - by the muscular contractions of the walls in the stomach called peristalsis.

Esophagus, also known as the food pipe, is a primary food conduit through which the food passes from the pharynx to the stomach. The movement of food in the food pipe is aided by the peristaltic contractions.

The protein digestion begins in the stomach. The gastric juice present in the stomach consists of hydrochloric acid and pepsin, which starts the digestion of protein.