Explain The Three Patterns That Regulate Hormone Secretion

Endocrine Written Assignment

1. There are three patterns that regulate hormone secretion; Non-hormonal, neuronal, and Hormonal. In Non-hormonal, the release of a hormone is dependent on the amount of another substance that is not a hormone. For instance, if the concentration of glucose in the blood stream is to low the pancreases with release glucagon which causes the liver to convert glycogen to glucose. Neuronal is the regulation of hormones based on the emotions and stress a person feels. A common example of this is adrenalin (epinephrine) which is the fight or flight hormone. Finally, there is Hormonal with is regulated by other hormones. An example of this would be any releasing hormone produced by the Hypothalamus that causes the release of Tropic hormones from the anterior pituitary gland.

2.

The hypothalamic tract connects the hypothalamus to the pituitary gland. Thru this tract the Hypothalamus will “talk” to the anterior pituitary. A tract system is transporting the hormone from one part of an organ to another, a portal system on the other hand involves capillaries for exchange. The hypothalamus releases hormones into the anterior pituitary thru capillaries and the pituitary releases tropic hormones.

3. Hydrophobic hormones are usually made of lipids or cholesterol so they can pass thru the cells plasma membrane. Hydrophilic on the other hand are usually made of small proteins or amino acids so they bind to receptors on the cell. Steroids like HGH are hydrophobic while glucagon and insulin are