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II. Write T for true and F for false statements.

1. The brain stores information as messages.

2. The lungs contract when we inhale.

3. The liver helps in the digestion of fats.

4. Arteries are blue and have thin walls.

5. The undigested food passes into the large intestine.

III. Read the following and answer the questions.

Some of our body parts can be seen from outside. These are called external body

parts. Some of our body parts cannot be seen from outside as they are inside the

body. These are called the internal body parts.

1. The organ that controls all functions of our body -

2. The organ that helps us breathe -

3. The organ which works all day and night to keep us alive -

4. The organ that digests the food we eat -

5. The organ that controls our blood sugar levels -

IV. Answer the following questions in two or three sentences.

1. What are internal organs? Give two examples.

2. What are external organs? Give two examples.

3. Define inhalation and exhalation.

4. What happens to the undigested food?

5. What does the liver do?

6. How do the kidneys help us?

V. Answer the following questions in three to six sentences.

1. What are the functions of the brain?

2. Explain how the heart and the lungs work together.

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