[PHGY 210] - Final Exam Guide - Comprehensive Notes for the exam (50 pages long!)
29 Nov 2016
School
Department
Course
Professor
Document Summary
Non-respiratory functions: childbirth, defecation, urination, speaking, protective reflexes. Coughing, sneezing, vomiting: production of hormones and peptides in lung, olfaction, temperature regulation via water loss, reservoir of blood for left heart, protect against foreign particles. Steps: ventilation convection of o2 to the alveoli via convection. Convection: move down hydraulic pressure gradient: gas exchange at alveoli diffusion of o2 and co2 between the blood in the pulmonary capillaries. Move down partial pressure: use of o2 in the tissues as a h+ acceptor and production of co2, atp, and h2o. Barometric pressure (pb) air exerts on bodies. Natural pressure is 0: forces opposing movement of air out of lungs, pressure of lung. P (lung) = p (alveoli) p (pleural cavity: internal pressure with wall tension. Internal presser =2(tension of wall)/radius: p=2t/r, different pressures of the alveoli. Postganglionic sympathetic fibers from the paravertebral ganglia. Directly release of ne activates b2 receptors on bronchial smooth muscle.
