ANP 1105 Lecture Notes - Lecture 7: Hypophyseal Portal System, Preganglionic Nerve Fibers, Limbic Lobe

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1105
• Professor: Qiao Li

Document Summary

4. 1 deine & idenify the principal characterisics of homeostasis (ch. Nutrients: chemicals for energy & cell building. Oxygen: essenial for energy release (atp producion) Appropriate atmospheric pressure: for adequate breathing and gas exchange in the lungs. Constant monitoring & regulaion of all factors that can change (variables) Walter cannon: ability of the body to maintain relaively stable internal condiions even though there is coninuous change in the outside world . Not unchanging - a dynamic state of equilibrium involving many systems (i) adequate blood levels of vital nutrients (ii) heart acivity/blood pressure monitored & adjusted as needed (iii) wastes must not accumulate (iv) maintenance of body temperature. Most feedback mechanisms in body are to reduce or shut of original simulus (variable changes in opposite direcion of iniial change) Regulaion of blood volume by adh anidiureic hormone (endocrine system mechanism) Regulaion of body temperature (a nervous system mechanism) Change occurs in same direcion as the original response.