The immune responses in older people are weak due to the degeneration of:
1. Thyroid
2. Pineal
3. Adrenal
4. Thymus

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

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

1. Prolactin

2. Somatotropin

3. Vasopressin

4. Gonadotropins

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

Identify the incorrect statement:
1. In males FSH regulates spermatogenesis
2. Thyroid gland produces T3 and thyroxine (T4) hormones
3. ACTH stimulates secretion of glucocorticoids
4. PTH is a hyperglycemic hormone

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

The amino acid derivative among the following hormone is:-

1. Insulin
2. Epinephrine
3. Estradiol
4. Testosterone

Androgenic steroids in female are secreted by:
1. pineal gland
2. Testes
3. Adrenal cortex
4. Hypothalamus

ACTH controls the secretion of:
1. cortisol
2. aldosterone
3. epinephrine
4 testosterone

The biomolecule that cannot act as a chemical messenger [hormone] is:
1. Proteins

2. Steroids

3. Fatty acids

4. Carbohydrate