Question

The pituitary gland is located in a bony cavity called ______P______ and is attached to hypothalamus by a stalk known as ______Q_____. It is divided anatomically into an adenohypophysis and a neurohypophysis. Adenohypophysis consists of two portions,_______R________and _______S_______. The _____R______ region of pituitary, produces ______T_______, prolactin (PRL), thyroid stimulating hormone (TSH), adrenocorticotrophic hormone (ACTH) and gonadotropins (luteinizing hormone (LH) and _____U______.

• A.

  P	Q	R	S	T	U
  Ethmoidal cavity	isthmus	pars tuberalis	pars intermedia	GH-RH	estrogen

• B.

  P	Q	R	S	T	U
  Ethmoidal cavity	infundibulum	pars tuberalis	pars intermedia	GH	estrogen

• C.

  P	Q	R	S	T	U
  Sella tursica	isthmus	pars distalis	pars tuberalis	GH-RH	follicle-stimulating hormone (FSH)

• D.

  P	Q	R	S	T	U
  Sella tursica	infundibulum	pars distalis	pars intermedia	GH	follicle-stimulating hormone (FSH)

Answer 1

Answer: (D)

I. Adenohypophysis - It is divisible into
A. Pars distalis (anterior pituitary) - Growth hormone (GH), Prolactin (PRL), Thyroid-stimulating hormone (TSH), Adrenocorticotrophic hormone (ACTH), Luteinizing hormone (LH) and Follicle-stimulating hormone (FSH).
B. Pars intermedia - Melanocyte stimulating hormone (MSH).
II. Neurohypophysis (Pars nervosa or Posterior pituitary) - Oxytocin and Vasopressin (or ADH).
- These hormones are actually synthesized by the hypothalamus and are transported to neurohypophysis via hypothalamic neurons.