Which of the following statement is correct in relation to the endocrine system?

Options

(a) Organs in the body like gastrointestinal tract, heart, kidney and liver do not produce any hormones
(b) Non-nutrient chemicals produced by the body in trace amount that act as intercellular messenger are known as hormones
(c) Releasing and inhibitory homones are produced by the pituitary gland
(d) Adenohypophysis is under direct nueral regulation of the hypothalamus

Correct Answer:

Non-nutrient chemicals produced by the body in trace amount that act as intercellular messenger are known as hormones

Explanation:

Hormones are non-nutrient chemicals which act as intercellular messengers and are produced in trace amounts. Gastrointestinal tracts secrets four mmajor peptide hormones – gastrin, secretin, chelecystokinin (CCK) and gastric inhibitory peptide (GIP) while juxtaglomerular cells of kidney secrets erythropoietin, a peptide hormone. Releasing and inhibitory hormones are produced by hypothalamus. Neurohypothysis or posterior pituitary is under direct neural regulation of the hypothalamus.