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Identify the precursor from the given list that can result in the synthesis of all others:
1. aldosterone
2. cholesterol
3. cholecalciferol
4. estrogen

Some hormones can act on their target cells through second messengers. Identify the one that does not:

Hypothalamus secretes the releasing hormones and the inhibitory hormones into:

Identify the pair where the source cells are not correctly matched with the hormone secreted by them:
1. somatotropes; GH
2. thyrotropes; thyroxine
3. mammatropes; PRL
4. corticotropes; ACTH

A hormonal disorder that develops when pituitary gland produces too much growth hormone during adulthood is known as:

Tropin is a hormone that induces the secretion of other hormones. Identify the tropin produced by the anterior pituitary that does not cause the release of another hormone by stimulating another endocrine gland?

The major portion of the posterior lobe of the pituitary gland is called as:

Identify the non steroidal hormones that are nonpolar and can be administered orally:
1. prostaglandins
2. estrogen and progesterone
3. insulin and glucagon
4. thyroid hormones (T₃ and T₄)

Which of the following correctly describes the role of cAMP and the hormones employing it?
1. binding site; nonsteroid
2. membrane receptor; steroid
3. activity site; G protein
4. second messenger; nonsteroid

Some hormones act through a second messenger. In such a case, the first messenger would be:
1. Diacyl glycerol
2. hormone
3. source cell
4. receptor