Question

Explain the digestive system of human beings

Answer 1

# The process of breaking down complex food into smaller molecules that can be easily absorbed is called digestion.

#This process takes place in the digestive system of the body. The digestive tract and the association glands together constitute the digestive system.

@ Digestive system in Human Beings

>> The diagram alongside shows the main parts of the digestive system of human beings.

>> Digestion takes place in two stages. The first stage is physical digestion, in which food is broken down into smaller particles. The second stage is chemical digestion. This stage involves complex protein molecules called enzymes.

>> These enzymes break up complex molecules until they become small enough to pass through the cell membrane. These enzymes are present in the digestive juices secreted by various glands like salivary gland , liver and pancreas.

>> The food we eat passes from our mouth to our anus through a long tube called the alimentary canal. The alimentary canal is a muscular tube about 10 m long. It starts from the mouth and ends at the anus.