Question

Observe the table:

	Difference in hormone secretion	Disorder	Symptoms
i	Under secretion of the hormone in children	(x)	(1)
ii	Over secretion of the hormone in children	(y)	(2)
iii	Over secretion of the hormone in adults	(z)	(3)

(a) Complete the table based on the hormone somatotropin.
(b) This hormone is not a tropic hormone. Why?

Answer 1

Difference in hormone secretion	Disorder	Symptoms
Under secretion of the hormone in children	Dwarfism	Short trunk, short neck, short arms and legs, cleft palate
Over secretion of the hormone in children	Gigantism	Delayed puberty. Increased sweating, large hands and feet with thick fingers and toes, thickening of the facial features
Over secretion of the hormone in adults	Acromegaly	Decreased muscle strength, large hand, feet, easy fatigue

(b) The hormones that stimulate endocrine glands for secreting their hormones are called tropic hormones. Since somatotropin does not stimulate any gland to secrete its hormones, it is not considered a tropic hormone.