ANFS 345 Lecture Notes - Lecture 9: Partial Pressure, Gas Exchange, Total Pressure

• School: University of Delaware
• Department: Animal and Food Sciences
• Course: ANFS 345
• Professor: Ryan Arsenault

Document Summary

Main gas consumed by aerobic metabolic processes. Main waste gas produced by aerobic metabolic processes. Need to exchange these gases is immediate; continued lack of respiration is fatal! Your brain will force you to take a breath if you hold your breath for too long - co2 will build up. Inhaled atmospheric air is a combination of gases. Passive movement of gas along pressure gradient (not. 3) active transport in another chemical form (co2 > hco3- bicarbonate) concentration gradient) Standard unit of measure: atmosphere (atm) pressure exerted by a single gas within a gas mixture. Sum of all the partial pressures of the gases in the mixture pressure of all gases in atmosphere at sea level. Higher temp or salinity > lower gas solubility. Dives pressure dissolves more gas in blood stream. On rapid return to surface, nitrogen gas bubbles can form and embolize, or spread through bloodstream, and kill the diver.