Write the functions of stomach, teeth and small intestine.

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Solution

Human digestive system:
Human beings are multicellular organisms that comprise various organ systems. One of those systems is the human digestive system.
Human digestive system help in the digestion of food consumed by humans. It comprises various organs and structures that work in coordination to break down complex food into simpler forms that the body can absorb.
Some parts of the human digestive system are:
1. Teeth
These are bony structures present in the oral cavity. Their number varies in people depending upon their age.
They perform the function of mechanical digestion by breaking down large food particles into small ones.
They help in chewing, cutting, and biting.
2. Stomach
It is a large J-shaped organ located below the chest.
The stomach's main functions include storing and mixing food with the digestive enzymes and regulating the movement of partially digested food into the small intestine.
3. Small intestine
It is a long tube in the abdomen that helps in complete food digestion.
It also performs the function of nutrient absorption released from food digestion.

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Similar questions

Q. Which of the following is the correct sequence of parts as they occur in the human alimentary canal?
(a) Mouth → Stomach → Small intestine → Oesophagus → Large intestine
(b) Mouth → Oesophagus → Stomach → Large intestine → Small intestine
(c) Mouth → Stomach → Oesophagus → Small intestine → Large intestine
(d) Mouth → Oesophagus → Stomach → Small intestine → Large intestine

Question 4
Which is the correct sequence of parts in a human alimentary canal?

(a) $M o u t h \to s t o m a c h \to s m a l l i n t e s t i n e \to o e s o p h a g u s \to l a r g e i n t e s t i n e$
(b) $M o u t h \to o e s o p h a g u s \to s t o m a c h \to l a r g e i n t e s t i n e \to s m a l l i n t e s t i n e$
(c) $M o u t h \to s t o m a c h \to o e s o p h a g u s \to s m a l l i n t e s t i n e \to l a r g e i n t e s t i n e$
(d) $M o u t h \to o e s o p h a g u s \to s t o m a c h \to s m a l l i n t e s t i n e \to l a r g e i n t e s t i n e$

Give the meaning of:

digestive juice, saliva, stomach, small intestine, large intestine, anus.

Q. The functions of the organs of digestion are listed below. Write the name of one organ from the lost against each phrase stomach, liver, small intestine, oesophagus, mouth, large intestine.
(a) no digestion takes place here _________________
(b) food is partly digested here in an acidic medium ________________
(c) digest and also absorbs food _______________
(d) takes food from the mouth to the stomach _______________
(e) starch is partly digested here ________________
(f) produces bile __________________

Q. Differentiate between digestion in small intestine and digestion in stomach.

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