IMG_0002_NEW_0004

IMG_0002_NEW_0004 - (1 the total(barometric pressure and(2...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
GAS EXCHANGE AND TRANSPORT Two sites of gas exchange in the body: 1. Alveolar-capillary membrane in lung: - net diffusion of 02 from alveoli ) blood - net diffusion of COz from blood ) alveoli 'll" - ..1. ; l ', t s'/t! tt-1l,ttwt) -l tit) i. t i *ri '; ' t ins,ilt ^(vu*l*o' *'' ',,. . i,ii 1.,'.i" 2. Tissue-capillary membrance in tissues: - net diffusion of Oz from blood ) tissue - net diffusion of COr from tissue ) blood I. GAS EXCHANGE A. Partial Pressure of Gases in a Gas Mixture Partial pressure of a gas - the pressure of a gas in a gas mixfure is dependent on:
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: (1) the total (barometric) pressure, and (2) the fractional concentration of that gas For example at sea level, the total pressure of all dry ambient (atmospheric) air gases equalsT-6Q qrll Hg which equals barometric pressure Composition of dry ambient air at sea level: &-Gas Concentration oz 20.93 % Nz 79.04 % coz 0.03 % 100.00 % 760.0 mm Hg The most imporlant factor determining gas exchange is the partial pressure gradients of the gases involved. Partial Pressure .2093 X760: 159.2 mm Hg .7904X760:600.7 mm Hg .0003 X 760: 0.1 mm Hg...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online