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)______.

	P	Q	R	S	T	U
A	Ethmoidal cavity	isthmus	pars tuberalis	pars intermedia	GH- RH	estrogen
B	Ethmoidal cavity	infundibulum	pars tuburalis	pars intermedia	GH	estrogen
C	Sella	isthmus	pars distalis	pars tuberalis	GH - RH	follicle - stimulating hormone(FSH)
D	Sella tursica	infundibulum	paras distalis	pars intermedia	GH	follicle stimulating hormone (FSH)

• A. A
• B. B
• C. C
• D. D

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.