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प्रश्न
Why do we sweat?
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उत्तर
Sweat palys an important role in maintaining body temperature. The human body functions normally at a temperature of about 37°C. When it gets hot sweat glands start secreting sweat, which contains water with small amounts of other chemicals like ammonia, urea, lactic acid and salts. This helps in cooling the body.
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संबंधित प्रश्न
Complete the following table.
| Organ system | Organs | Functions |
| 1. Respiratory | ||
| 2. Circulatory system |
Take a large sheet of thick paper, about the height of a child in the class. Put it on the wall as shown in the picture and secure it with tapes. Ask one student to stand against it and another to draw the outline of the body. Now get other students to point out the right places of the following organs within the outline - the brain, lungs, heart, and stomach. Now recall the following details about each of the organs. (1) In which cavity of the body is it situated? (2) What is its function? (3) Which are the bones that protect it?
What do you do when someone touches you and you feel uncomfortable?
Circulatory system transports these throughout the body
Name the processes by which air enters and comes out of our lungs.
Assertion: In both the sexes gonads perform dual function.
Reason: Gonads are also called primary sex organs.
Higher Order Thinking Skill
Can you guess why there are sweat glands on the palm of our hands and the soles of our feet?
List the major organ system of our body.
______ acts as a thermoregulatory organ.
What is homeostasis?
