Choose the incorrect sentence.

  • A
    Small amounts of androgenic steroids are secreted by the adrenal medulla.
  • B
    Androgens act on the central neural system and influence the male sexual behavior.
  • C
    The estrogen is synthesised and secreted mainly by the growing ovarian follicles.
  • D
    Catecholamines stimulate the breakdown of lipids and proteins.

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The hypothalamic hormones reach the pituitary gland through$:-$

Which of the following pairs is $NOT$ correctly matched?

Which of the following statements are true or false?
$I$. Calcitonin regulates the metabolism of calcium.
$II$. Oxytocin stimulates contraction of uterine muscles during birth.
$III$. Grave's disease is caused by the malfunctioning of the adrenal gland.
$IV$. $ADH$ stimulates the absorption of water and increases urine production.

Write short notes on the functions of the following hormones: (Any four)
$(a)$ Parathyroid hormones $(PTH)$
$(b)$ Thyroid hormones
$(c)$ Thymosin
$(d)$ Androgens
$(e)$ Estrogens
$(f)$ Insulin and Glucagon

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Which cranial nerve is responsible for the regulation of the heartbeat?

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