Fill in the blanks with the correct alternative from those given in the brackets.

Cretinism is caused due to ____________ of thyroxine. (undersecretion/oversecretion)

Q. Fill in the blanks with the correct alternative from those given for each: [5 MARKS]
(i) Thyroid is located close to ___. (larynx/kidney)
(ii) Cretinism is caused due to ___ of thyroxine. (undersecretion / oversecretion)
(iii) Oversecretion of thyroxine causes ___ goitre. (simple / exophthalmic)
(iv) The condition showing swelling on face and hands and sluggishness due to hypothyroidism is called ___. (cretinism / myxoedema)
(v) The hormone concerned with facing dangers is ___. (thyroxine / cortisone / adrenaline)

Q. Cretinism is caused due to ........... of thyroxin. (undersecretion/ oversecretion)

Q. Fill in the blanks with the correct alternative:
(iii) Oversecretion of thyroxin causes
goitre. (simple/exophthalmic)

Q.

Match the items of column I with those of column II.

Column I Column II

1. 'β' (beta) cells of islets of Langerhans (a) Condition due to undersecretion of thyroxine in adults.

2. Thyroid (b) Undersecretion of glucocorticoids

3. Cretinism (c) Exophthalmic goitre

4. Addison's disease (d) Increases heart beat

5. Hyperthyroidism (e) Thyroxine

6. Myxoedema (f) Adrenal cortex

7. Adrenaline (g) Insulin

8. Cortisone (h) Undersecretion of thyroxine in a child.

Q. Match the items in Column A with those in Column B.

	Column A		Column B
(a)	Cretinism	(i)	Pituitary gland
(b)	Diabetes mellitus	(ii)	Defective development of child
(c)	Increased metabolic rate	(iii)	Oversecretion of thyroxine
(d)	Simple goitre	(iv)	Insufficient iodine in food
(e)	Growth hormone	(v)	Insufficient insulin in blood.