Many adults living in the US become curious about doctor prescribed growth hormone replacement therapy when they begin to experience chronic symptoms, such as low energy, fatigue and low sex drive, that are frequently associated with your bodyâs declining growth hormone levels.
External, or exocrine, secretion is distinguished from internal, or endocrine, secretion. In external secretion the products elaborated by a gland are released into the external environment; the secretion first enters the glandular duct, from which it is discharged onto the surface of the body or into hollow organs.
Pituitary gland is called the master gland as it direct the other endocrine glands like thyroid, adrenal and gonads to secrete their hormones. Pituitary glands secrete stimulating hormones which goes via blood to the target endocrine glands which in turn release its hormone.