Respiratory System: Practice Questions for Biology PDF

↑ volume d Pressure , in & out of gas lungs d volume ↑ Pressure , exchange of gases O2inCOz out sacs of the tiny airallow lungs That for vapid g...

↑ volume d Pressure , in & out of gas lungs d volume ↑ Pressure , exchange of gases O2inCOz out sacs of the tiny airallow lungs That for vapid gas exchange helps adhere lung to chest wall , wo it the lung deflates , Located between visceral pleura and parietal pleura Volumedpressure ↑ ↓ Volume Pressure Ventilation Respiration Igas in 2 outof longs (exchange of gases low high curved  Type 1 contract relax contracts contracts scalenes internal diaphragm diaphragm intercostals & external intercostals & abdominals really into gasgoes gas goes - , contract to a pressure lungs environments diaphragm vel diaphragm curved, breathing = Volume d avolume dvolume volume? Pressure& dpressure ↑ Pressure pressured ↑ concentration of surfactant P- T-tension v = radius found in small alveolus A pressure * Surface tension this is bad In terms of because they The radius cannot be changed can surfactant collapse. but surface tension can can help  in & out of minute howmuch gas lungs per (VE) = fbxTV fb = frequency of breaths breath TV how much air in & out of longs per Ex : 12 x500 = 6000 milmin in alveolus how much gas exchange (VA) fb(TV -Ds) slow breathing = fb frequency of breath better = is Deadpenchave 4, 200 milmin for you V Q much Closeto perf match much less than. greater of than 0 S. E.8 at 0 0. 8 ↑ Ventilation · ↓ Ventilation · most optimal area ↓ Perfusion ↑ perfusion ventilation · · blood vessels here = · bloodvessels here basodilate Perfusion basoconstrict reduced perfusion causing elevated perfusion causing Pavityhe bring  exchange ( *) down in entire fluid accumulation prevents gas lung fluid Inhaling 100%O won't help unless it is partially filledw/ · · Hypoxemia : Less Of in blood since lungs are performing Lessthan % 100 lungs are profused poorly/inefective ventilation. shunt: but wall structure destroys aveolus changesa lot , breathing can in 100 % will oxygen help cause hypoxemia hypoxialties & organs lacking 02) & · · (V/Q mismatch) (a) way too high · Vgas = xD ↑ AP ↑ transfer gas = ↑ area ↑ diffusion rate =