Question

The complex digestion of one of children’s favourite food ‘’ PIZZA’’
The tasty pizza will begin its in Ramesh’s mouth. There are six salivary glands under her tongue
which shoot out saliva to help softening the food. The mouth uses chewing which mechanical
digestion to break down the food. After he swallow it, the pizza enters the oesophagus, which uses
strong muscles to push food down in the stomach. The contraction the muscles do are called
peristalsis. In her stomach the Pizza gets very digested. Muscles churn the pizza up, so it uses
mechanical digestion. There are strong acids that help break down the food as well which is chemical
digestion. A layer of mucus protects his interior stomach from the acids. After about three hours in
the stomach, the food has been so digested and it has turned into a soupy mixture called chyme.
Then the chyme moved to the small intestine.
Once the chime enters the small intestine, it is broken down even more with chemical digestion. The
small intestine receives secretion of two glands liver and pancreas. Liver secretes bile which is
normally stored in the gall bladder. Bile helps to break down the fat present in food. Pancreas add
enzymes that help to softens and break down the food.
The final step is the large intestine(it is called large intestine because it is a quite wide tube)

which removes water from broken down food materials so they can go into the bloodstreams. The
remaining material which is all that is left after the stomach, small intestine and large intestine have
filtered through it and digested it is waste which is removed from the body.
Question 1
In which part of the digestive system is water absorbed?
Question 2
Complete digestion of food occurs in
A. Stomach
B. Small intestine
C. Pancreas
D. Large intestine
Question 3
Ramesh got his gall bladder removed surgically as he was diagnosed with a stone in his gall bladder.
After surgery he faced problems in digestion of certain food items when consumed in bulk. What
kind of food items would they be and why ?
Question 4
Choose the odd one out from each group and give reasons-
(a) Liver, salivary glands, starch, gall bladder
(b) Oesophagus,small intestine, rectum, large intestine
Question 5
The swallowed food moves downwards in the alimentary canal. Name and explain the process

Answer 1

Answer:

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