Lesson 2 – Our Body
Observe
Which major body parts are being used while performing the activities in the picture below?
Ans: The following major body parts are being used in the picture:
- Eyes – for reading the book, seeing the flowers, and watching the ball.
- Ears – for listening to the radio.
- Nose – for smelling the flowers.
- Hands – for cutting fruits, holding the book, and holding the flowers.
- Legs and Feet – for standing, walking, and playing football.
Think
Is the tongue an external organ?
Ans: Yes, the tongue is an external organ because it is a sensory organ and can be seen from outside the body.
Can you Tell?
Name the internal organs in our body other than the ones studied above.
Ans: Other internal organs in our body are the kidneys, bladder and pancreas.
Let’s Revise
(A) Match the following.
| A | B |
|---|---|
(1) Brain |
(a) Churning food |
(2) Heart |
(b) Storing information |
(3) Stomach |
(c) Absorption of nutrients |
(4) Small Intestine |
(d) Keeping blood circulating throughout the body |
Ans:
| A | B |
|---|---|
(1) Brain |
(b) Storing information |
(2) Heart |
(d) Keeping blood circulating throughout the body |
(3) Stomach |
(a) Churning food |
(4) Small Intestine |
(c) Absorption of nutrients |
(B) Answer the following questions in one sentence.
(1) What are external organs?
Ans: Organs located outside the body and that can be seen are called external organs.
(2) What is the function of the heart?
Ans: The heart works like a pump and keeps circulating blood throughout the body.
(C) Which is the odd word out in the group? Why?
(1) Nose, Ear, Eyes, Lungs
Ans: Lungs
Why? Lungs are an internal organ, while nose, ear and eyes are external organs.
(2) Heart, Lungs, Liver, Eyes
Ans: Eyes
Why? Eyes are an external organ, while heart, lungs and liver are internal organs.
(3) Hand, Leg, Eyes, Stomach
Ans: Stomach
Why? Stomach is an internal organ, while hand, leg and eyes are external organs.
(4) Ear, Oesophagus, Small Intestine, Large Intestine
Ans: Ear
Why? Ear is an external organ, while oesophagus, small intestine and large intestine are internal organs.
(D) Classify the following into External and Internal Organs.
Nose, Brain, Eyes, Stomach, Tongue, Heart, Ear, Large Intestine, Skin, Small Intestine, Liver, Rectum, Oesophagus, Anus
Ans:
External Organs: Nose, Eyes, Tongue, Ear, Skin
Internal Organs: Brain, Stomach, Heart, Large Intestine, Small Intestine, Liver, Rectum, Oesophagus, Anus.
(E) Using lines, connect the given organs to their correct position in the human body diagram.
Ans:
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