PHS 3341 Lecture 14: Endocrinology 1&2

• School: University of Ottawa
• Department: Physiology
• Course: PHS 3341
• Professor: Stephen Gee

Document Summary

Distinguish between the endocrine and nervous systems in the regulation of body function. Ductless glands - bloodstream or diffusion cannot directly access the target organ. Define the following mechanisms of target cell regulation. The same cell that is producing a hormone expresses receptors for that hormone and that hormone can bind to that cell. Signaling to a different cell type, that is close enough that the blood stream isn"t required. The hormones aren"t released in the synaptic cleft, but are instead released into the blood stream. Use the blood stream as a pathway to reach the destination. A chemical produced by an endocrine gland that travels via the blood stream to the target to modify the target. This allows us to include both autocrine and paracrine factors which don"t use the blood stream. Hormones change the rates of ongoing chemical reactions: Adaptive responses to help body cope with stress. With ans: circulation of blood: digestion & absorption.