CCK and secretin secreted by:
1.  Stomach
2.  Ileum
3.  Duodenum
4.  Colon

Parathormone deficiency leads to:
1.  Decrease of $C{a}^{+2}$ level in blood
2.  Increase of $C{a}^{+2}$ level in blood
3.  Osteoporosis
4.  Hypercalcemia

Chemically hormones are:

1. Proteins, steroids & biogenic amines

2. Proteins only

3. Steroids only

4. Biogenic amines only

Oxytocin mainly helps in:
1.  Milk production
2.  Childbirth
3.  Diuresis
4.  Gametogenesis

Which hormone is concerned with the concentration of urine:
1.  Oxytocin
2.  Vasopressin
3.  Prolactin
4.  Cortisol

Insulin differs from Growth hormone in:
1.  Increases activity of m-RNA and Ribosomes
2.  Increase the permeability of cell membrane
3.  Affects metabolism of fats by inducing lipogenesis
4.  Increasing protein synthesis

Which gland decreases in size with increasing age:

Melatonin is secreted by:
1. Pineal gland
2. Skin
3. Pituitary Gland
4. Thyroid

MSH is secreted by:
1. Anteria lobe of the pituitary
2. Middle lobe of the pituitary
3. Posterior lobe of the pituitary
4. Endostyle

Melanin protects from:

1. U.V. rays

2. Visible rays

3. Infrared rays

4. X-rays