The secondary sexual characters develop in females because of:

(1) estrogen

(2) androgens

(3) absence of androgens

(4) absence of estrogens

Which of the following glands secretes the hormone melatonin?
1. anterior pituitary gland
2. melanocytes
3. pineal gland
4. suprachiasmatic nucleus of the hypothalamus

The development of secondary sexual characters in females is primarily controlled by:
1. Estrogen
2. Progesterone
3. LH
4. FSH

A hormone that is antagonist to the parathyroid hormone is secreted from :
1. Thyroid
2. Adrenal cortex
3. Hypothalamus
4. Parathyroid itself

Which of the following endocrine glands is under the direct neural regulation of the hypothalamus?
1. Pineal
2. Thymus
3. Posterior pituitary
4. Adrenal medulla

All the following are secreted by the anterior pituitary except:-

1. Prolactin

2. Somatotropin

3. Vasopressin

4. Gonadotropins

Hormones that act by interacting with intracellular include all the following except:
1. Thyroxin
2. Estrogen
3. Epinephrine
4. Cortisol 

Which of the following hormones does not have an intracellular receptor?
1. Estradiol
2. Thyroxin
3. Adrenocorticotrophic hormone
4. Cortisol

AIDS is characterized by the presence of:

1. Nosocomial infections

2. Iatrogenic infections

3. Opportunistic infections

4. Subclinical infections  

GnRH, a hypothalamic hormone, needed in reproduction, acts on