The Human Nervous System

The effects of the ductless glands make takes minutes, hours or weeks (e.g. growth hormone) and the reactions are more generalized. This is why the nervous dodging has been likened to airmail while the endocrine system has been likened to the pony express.

all(prenominal) of the hormones of the human body are proteins or protein derivatives, except the call down hormones and those of the adrenal cortex, which are steroids, which are lipid derivatives (Applegate, 2000, 205).

A sharpen organ is the organ on which a specific hormone has receptors and therefore causes a response (Applegate, 2000, 206). The receptors may be on the surface of the cells

The hypothalamus controls the precedent pituitary gland by secreting releasing and inhibiting hormones which control the secernments of the anterior pituitary hormones (Applegate, 2000, 208).

For instance, it secretes thyroidalal releasing hormone which induces the anterior pituitary to secrete thyroid stimulating hormone, which acts on cells of the thyroid gland to increase secretion of thyroid hormone; it secretes adrenocorticotropic releasing hormones which cause the anterior pituitary gland to secrete adrenocorticotropic hormone which acts on cells of the adrenal cortex to make them produce the glucocorticoid hormones.

Neurons in the posterior pituitary gland (posterior pituitary gland) secrete hormones directly into the bloodstream for transport to their targ
Ordercustompaper.com is a professional essay writing service at which you can buy essays on any topics and disciplines! All custom essays are written by professional writers!