1. State the role of speech and writing in human life 2. State the meaning of the establishment and inhibition of conditioned radiation

3.Name the defects of the eye that you know, the causes and remedies

4. Why does myopia increase in school age, stating remedies?

5. What are the properties and roles of hormones?

6. Why is the pancreas said to be a phase gland?

7. Describe the function of testicles and ovaries?

8.What causes the body changes during puberty in boy and girl?

Which of these changes is the most important?

9. Why is it said that the pituitary gland is the most important gland?