Question

the alimentary canal stretches from to

Answer 1

The alimentary canal stretches from u called cavity to anus.

This follows as,

Alimentary canal :

The digestive system from Oesophagus to the anus is called alimentary canal. It's about 9 m long!

It constitutes following organs namely :

a. Buccal cavity
b. Oesophagus
c. Stomach
d. Small intestine
e. Large intestine
f. Rectum
g. Anus.

Function of the above given respectively :

a. Buccal cavity :

Human take in food through mouth. where which salivary enzymes breaks down starch into sugar.

b. Role of Oesophagus :

It allows passage of food from Buccal cavity to the stomach.

c. Role of Stomach :

Here HCL, mucus and several digestive enzymes mixed with food. Where which HCL males food acidic fit enzymes to action.

d. Role of Small intestine :

This tube has three main divisoms namely - Duodenum, jejunum and ileum. Duodenum is responsible for mixing bile and pancreatic juice with food. Jejunum is middle part going only in man.

Total absorption takes place in the ileum. This ileum has villi on the surface. This villi increases area for absorption. The villi have blood vessels, digested food passes villi to there and enters the blood stream. Which then transfer to liver and then to the heart ♥ .

e. Role of large intestine, anus and rectum :

Food from small intestine moves there. Here the most of water and salt be removed from the waste by absorbtion. This intestine all the passage of faecal matter through the anus.

Answer 2

The alimentary canal stretches from mouth to anus has a length of 9 meters.

The alimentary canal is the digestive tract as it is most commonly known, extends from the oesophagus to the anus.

Digestion begins at the mouth, where food is chewed and mixed with saliva, which adds moisture and contains the enzyme amylase that begins to break down food particles.

The tongue mulls the food into a ball mass, known as the bolus.

The bolus travels down the oesophagus, through the pharynx by means of muscular contraction called the peristaltic movement.

Once the bolus enters the stomach, the hormone gastrin arouses the secretion of acidic juices, which further aid in the digestion of the food mass.