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Question

Pars distalis region of pituitary does not produce these hormones
I. Melanocyte stimulating hormone
II. Vasopressin
III. Prolactin
IV. Growth hormone


A
III only
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B
I and IV only
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C
II and IV only
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D
I and II only
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Solution

The correct option is B I and II only
Pituitary gland is divided into an adenohypophysis and a neurohypophysis. Adenohypophysis consists of two portions, pars distalis and pars intermedia. The pars distalis region of pituitary, produces growth hormone (GH), prolactin (PRL), thyroid stimulating hormone (TSH), adenocorticotrophic hormone (ACTH), luteinizing hormone (LH) and follicle stimulating hormone (FSH). Pars intermedia secretes only one hormone called melanocyte stimulating hormone (MSH). Neurohypophysis (pars nervosa) stores and releases two hormones called oxytocin and vasopressin. 
I. Melanocyte stimulating hormone (MSH) - pars intermedia
II. Vasopressin - pars nervosa
III. Prolactin - pars distalis
IV. Growth hormone - pars distalis
So, the correct answer is 'I and II only'.

Biology

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