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A&P II exam MC

tidal volume 500ml amt of air u move in or out in a single respiratory cycle
residual volume 1200ml amt of air left in lungs after max exhale
total lung capacity 5800ml add tidal & residual together
Inspiration muscle contract->increases volume of thoracic cavity->intrapleural pressure->lungs expand->intrapulmonary pressure decreases->air into lungs
Expiration muscles relax->decrease volume in thoracic cavity->increases intrapleural pressure->lungs recoil->intrapulmonary pressure increases->air out of lungs
spirograph graph the changes in volume in the lungs
vital lung capacity max inhale/exhale of the lungs
carbon monoxide poisoning symptoms: confused, throbbing headache, flushed/red given hyperbaric therapy CO competes for same site as hg as O2 hemoglobin has 200x greater affinity for CO than O2
hypoxia inadequate delivery of O2 to tissues different types due to different causes
DRG dorsal respiratory group alters in response to input of inspiration
VRG has inspiratory & expiratory centers
Created by: midnight1854