HUMAN NUTRITION

Detailed explanation-1: -Ingestion. The first activity of the digestive system is to take in food through the mouth. This process, called ingestion, has to take place before anything else can happen.

Detailed explanation-2: -The process of taking in food through the mouth is called ingestion.

Detailed explanation-3: -Ingestion – the taking in of food Food is taken into the mouth where it is physically broken down by the teeth into smaller pieces. The presence of food in the mouth triggers a nervous reflex that causes the salivary glands to deliver a watery fluid called saliva to the mouth.

Detailed explanation-4: -Ingestion can be referred to as an organism’s consumption of a substance. In the case of human beings, when the food is taken in from the mouth and then masticated and swallowed for further processing, it is called ingestion. It takes place by absorbing substances by cell membranes in single-celled organisms.

Detailed explanation-5: -The mouth, or oral cavity, is the first part of the digestive tract. It is adapted to receive food by ingestion, break it into small particles by mastication, and mix it with saliva.