Answer:
Ans. (b) Vasopressin
is also known as Antidiuretic Hormone (ADH). It is secreted from the neurohypophysis
of pituitary and facilitates water reabsorption from latter parts of the
tubule, thereby preventing diuresis.
Oxytocin is
a mammalian neurohypophysial hormone produced by the hypothalamus and is stored
and secreted by the posterior pituitary gland. Oxytocin stimulus contractions
of uterus at the end of pregnancy and also contractions of mammary glands the
help in flow of milk.
Adrenaline
is relesed by adrenal medulla at the time of emergency, hence has a role in "fight
or flight' reaction.
Calcitonin is
produced in humans primarily by the parafollicular cells of the thyroid. It acts
to reduce blood calcium ,
level opposing the effect of parathyroid hormone.
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