ANP 1105 Lecture Notes - Lecture 19: Red Blood Cell, T Wave, Extracellular Fluid

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1105
• Professor: Jacqueline Carnegie

Document Summary

Homeostasis ability to maintain relatively stable internal conditions dispite changing outside world. dynamic equilibrium involving: adequate blood levels of vital nutirents, heart activity and blood pressure checked and adjusted, waste not accuilated, body temp. Negative feedback goal is to prevent sudden changes: reduces / shuts off stimulus by, hormone or neural pathway reducing secretion, process regulated in opposite directions by two hormones or pathways like blood glucose. Ans motor neurons to smooth and cardiac muscle and glands responses usually without awareness: shunt blood to needier areas, adjust heart and respiratory rate, adjust body pressure and temp, adjust gastric secretions. Paraysympathetic division of the body resting and digesting, keep body energy use low, regulate ex: d system digestion, defecation, diuresis ( urine outflow) Sympathetic tone ( sns and vascular tone ) blood vessels in constant state of partial vasoconstriction: regulation of blood vessel diameter only happens in sns.