Question

List the different parts of alimentary canal and elaborate their function

Answer 1

Answer:

the parts of the alimentary canal are

1. the buccal cavity
2. the oesophagus
3. the stomach
4. the small intestine
5. the large intestine
6. the rectum
7. the anus

Explanation:

the buccal cavity main function is to salivate the food and to lubricate it to allow a easy passage

the oesophagus with its contractions allows the food to the stomach

the stomach is responsible for  storing  and churning of food

the small intestine is useful in digestion and majority of the digested here

the large intestine is useful in absorbing water and there are bacteria[ the healthy ones ] which absorbs vitamins

the rectum stores the faeces or the undigested

the anus excretes the undigested food

Answer 2

Answer: MOUTH(BUCCAL CAVITY): It is where mastication(chewing of food with the teeth) takes place. That is also where the saliva is, which contains the enzyme, amylase that aids in digestion of carbohydrates.

OESOPHAGUS(GULLET): This is where food and liquid passes through to the stomach.

STOMACH: This is where the digestion of protein foods begins. The stomach contains Hydrochloric acid to help break down protein food substances.

SMALL INTESTINE(ILEUM, JEJUNUM AND DUODENUM): Its primary function is to absorb nutrients and vitamins such as electrolytes, iron, carbohydrates, proteins and fats.

LARGE INTESTINE(COLON): This is where absorption of water takes place.

RECTUM: This is where faeces/stools are temporarily stored.

ANUS: It is an opening where undigested  food substances come out from(Egestion)

Explanation: