1. Why does food not taste good when we have a cold?
2. How do eyelids and eyelashes help the eye?
3. What is reflex action ? How is it different from other actions ?
4. How does brain convey message to different body parts?
5. What are sense organs ? Give one function of each.
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Ans1) When we're sick, our noses are often blocked with mucus. Also, the tissues inside our nose can become swollen and inflamed. This prevents us from smelling properly. your sense of smell is so tied to your sense of taste, if you can't smell things properly, you won't be able to taste them properly, either.
Answer -
1. Because changes in the tempreture of foods and drinks have an effect an the taste intensity of sour ,bitter, and astringent tests.
2.The person is blink reflexively at the sightest sensation or provocation. The upper and lower eyelids are thin flaps of skin and muscles that can cover the eye.
3.Involuntary action is the set of muscle movement which do not require thinking. But it is controlled by brain for example beating of heart beat. While on the other hand, the reflex action is rapid and spontaneous action in response to any stimulus which doesn't involve brain.
4..The rest of the nervous system is like a network that relays messages back and forth from the brain to different parts of the body. It does this via the spinal cord, which runs from the brain down through the back. It contains threadlike nerves that branch out to every organ and body part.
5.The sense organs are the body organs by which humans are able to see, smell, hear, taste, and touch or feel. The five sense organs are the eyes (for seeing), nose (for smelling), ears (for hearing), tongue (for tasting), and skin (for touching or feeling).