Control and Coordination

1

How do nerve impulses travel in the body ? Explain.

2

Why is the use of iodised salt advisable ? Name the disease caused due to deficiency of iodine in our diet and state its one symptom.

3

Write a and b in the given flow chart of neuron through which information travels as an electrical impulse.

4

Name the hormones secreted by the following endocrine glands and specify one function of each:

(a) Thyroid (b) Pituitary (c) Pancreas

5

Mention any one point of difference between Pepsin and Trypsin.

6

Draw a neat diagram of human brain and label Medulla and Cerebellum. Write the functions of the above mentioned parts.

7

"Both overproduction and underproduction of Growth hormone leads to disorders in the body." Explain