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प्रश्न
Why do we sweat?
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 |
Explain the functional correlation of the circulatory system with respiratory, digestive and excretory system.
Explain the differences.
External and internal respiration
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?
Which organ controls thinking, speaking, and learning. Write its three important parts.
Arrange in Correct sequence
Stomach → Large intestine → Oesophagus → Pharynx → Mouth → Small Intestine → Rectum → Anus
What will happen if the diaphragm shows no movement?
Match the following.
| Organ | Elimination | |
| Skin | a. | Urine |
| Lungs | b. | Sweat |
| Intestine | c. | Carbon dioxide |
| Kidneys | d. | Undigested food |
Higher Order Thinking Skill
Why your doctor advises you to drink plenty of water?
The voice box is called ______.
