KINE 1P90 Lecture 20: KINE 1P90 lecture 20 winter 2016
20 Mar 2016
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Document Summary
The pressure exerted by a single gas (o2, co2, n2) in air (a mixture of gases) The total pressure of a gas mixture. Equals the sum of the pressure that each gas would exert independently. Partial pressure is usually denoted with a p infant of the gas (ex. Partial pressure = % concentration x total pressure of gas mixture. Po2 = 760 mmhg x 0. 2093 = 159. 07mmhg. Pco2 = 760mmhg x 0. 003 = 0. 23mmhg. Pn2 = 760mmhg x 0. 7904 = 600. 7mmhg. 5486m above sea level = 380 mmhg. Every 10m below sea level pn2 doubles. N2 forced into blood stream and tissue. Gas always di uses down its partial pressure gradient. Having just returned from tissues where o2 was delivered and co2 was picked up. Due to ventilation constantly replenishing alveolar o2 and removing co2. Oxygen has di used from lungs to blood. Blood is composed of plasma ( uid) and blood cells.
