Question

Human alimentary canal

Answer 1

Answer:

The human digestive system consists of the gastrointestinal tract plus the accessory organs of digestion (the tongue, salivary glands, pancreas, liver, and gallbladder). Digestion involves the breakdown of food into smaller and smaller components, until they can be absorbed and assimilated into the body. The process of digestion has three stages. The first stage is the cephalic phase of digestion which begins with gastric secretions in response to the sight and smell of food. This stage includes the mechanical breakdown of food by chewing, and the chemical breakdown by

digestive enzymes, that takes place in the mouth.

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Answer 2

It begins from nosal and buccal cavity and ends on anus.

The alimentary canal consists of different organs which add add their secretions to food to break them into simpler substances.

namely carbohydrates ,fats and protiens.

The organs are .

1.Stomach

2.Liver

secretions or enzymes are also added by salivary glands, gall bladder ,small intestine and pancreas.