Q3 of 39 Page 141

What causes the following?

(i) Acromegaly ………………………………………………


(ii) Diabetes insipidus ………………………………

(i) Acromegaly is caused by the oversecretion of Growth Hormone during adulthood. This condition leads to extra growth of bones in the face, hands and feet and develops a large nose and thick lips.


(ii) Undersecretion of ADH from posterior pituitary causes diabetes insipidus.


Deficiency of Antidiuretic Hormone (ADH) causes diabetes insipidus in which urination is frequent and copious resulting in excess loss of water from the body and absence. A person suffering from this condition feels thirsty, frequent urination and there is a loss of water from the body.


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1

Mention if the following statements are true (T) or false (F). If false, rewrite the correct word (not words) striking out the single wrong one.

(i) The pituitary is of the size of a lemon. T/F


(ii) Pituitary has three lobes – anterior, posterior and intermediate. T/F


(iii) Over-secretion of growth hormone in adult causes gigantism. T/F


(iv) Vasopressin secreted by anterior lobe controls reabsorption of water form kidney tubules. T/F

 2

Write the full forms of:

(i) TSH _____________


(ii) LH _____________


(iii) ACTH _____________


(iv) ADH _____________

 1

A gland having endocrine as well as exocrine function is

 2

Exophthalmic goitre is caused due to the overactivity of