ANP 1105 Chapter Notes - Chapter 1, 14: Vasodilation, Ejaculation, Urination

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1105
• Professor: Joanne Savory

Document Summary

Dr. joanne savory and dr. m zeroual: homeostasis: control mechanisms & ans (ch 1 and 14) Homeostasis: body"s ability to maintain stable internal conditions (dynamic equilibrium) with continuously changing conditions of the external environment. I. e temperature regulation with sweat; blood ion concentration control. Communication is essential for homeostasis; it occurs by the nervous and endocrine systems (nerve impulse and blood-borne hormones info carriers) Receptor: senses monitor enviroment and respond to changes (stimuli) and send info (input) to the control center along the afferent pathway. Control center: determines set point the level to which the variable is to be maintained; analyzes the input and determines correct response; output info is then sent to the effect along efferent pathway. Effector: provides means for response to the stimulus; results of response are feedback to influence the effect of the stimulus (-ve or +ve)