PHGY 210- Final Exam Guide - Comprehensive Notes for the exam ( 30 pages long!)
Document Summary
In a living organism there must be coordination of number of physiological activities taking place simultaneously such as: movement, respiration, circulation, digestion, excretion and metabolism. The cns and the endocrine system represent the two major means by which these functions are coordinated. Communication between cells that are not in contact is achieved through a number of chemical substances, which are secreted by releasing cells and interact with specific receptors on distant target cells. Signaling through these receptors leads to a specific physiological effect: endocrine signaling. Involves hormone secretion into the blood by an endocrine gland. The hormone is transported by the blood hormones: estrogen (female) or androgen (male) Ii) neuroendocrine signaling (nervous tissue) to a distant target site. E. g. , anterior pituitary gland blood vessels gonads (target site), cells of ovary and testis steroid. Stimulus hypothalamus, hormone a secreted hypothalamo-pituitary portal vessels, increase of plasma.