PPT-Partial Pressure Primary determinant of diffusion and direction

Describes the pressure of a particular gas within a mixture Equals the total pressure times the fractional concentration of the particular gas according to Whose Law Partial Pressure Concentration of gases in ambient air. Bikha. Ram . Devrajani. FCPS,FACP, FRCP. Professor Medicine& Director MRC. Liaquat. University of Medical & Health Sciences. Jamshoro. Epilepsy. . PAROXYSMAL EXCESSIVE NEURONAL DISCHARGE. Overview. Theory. Basic . physics. Tensor. Diffusion . imaging . Practice. How . do you do DTI?. . Tractography. . DTI . in . FSL and other programs. Diffusion . Tensor Imaging. Brownian motion. SYSTEM. External respiration. Internal. . respiration. RESPIRATION. External. Internal. Between environment and lungs. Between blood and cell . http://activity.ntsec.gov.tw/lifeworld/english/content/body_cc4.html. Overview. Theory. Basic . physics. Tensor. Diffusion . imaging . Practice. How . do you do DTI?. . Tractography. . DTI . in . FSL and other programs. Diffusion . Tensor Imaging. Brownian motion. Gaseous Exchange. General factors affecting ‘flow’. F = k * . Δ. P / R. K = constant. Δ. P = delta P, ‘pressure gradient’. R = ‘resistance’ . For exchange of respiratory gases in lungs…. Gas Pressure. Gas pressure is caused by the molecules colliding with the surface.. In the lungs, the gas molecules are colliding with the surfaces of the respiratory passages and alveoli.. Higher concentrations of gas will produce more collisions and cause a higher pressure.. Overview. Theory. Basic . physics. Tensor. Diffusion . imaging . Practice. How . do you do DTI?. . Tractography. . DTI . in . FSL and other programs. Diffusion . Tensor Imaging. Brownian motion. Our cells continuously use oxygen and produce carbon dioxide. . Both gases move in and out of the lungs through the membranes of the alveoli, the tiny air sacs at the ends of the airways in the lungs.. Molecules move randomly & rapidly in relation to each other. Net diffusion is from [high] to [low]. Partial pr. of the gas is proportional to [gas]. .  nitrogen  79% 600 mmHg.  Oxygen  21% 160 mmHg. Objectives:. Develop and/or review basic relations for atmospheric temperature, humidity, density, and pressure.. Use the UNR, DRI, and Slide Mountain pressure to estimate the mean virtual temperature of the the layer between the stations.. Provide oxygen to tissues. Remove carbon dioxide from tissues. Divided into. Pulmonary ventilation . inflow and out flow of air between atmosphere and lungs. Exchange . of oxygen and carbon dioxide between lungs and blood. . Maha. . Saja. Msaja@ksu.edu.sa. Office no. 8 level 3. Let’s summarize what have been discussed so far!. What is the aim of respiration?. Deliver . O. 2. . to tissues. Remove . C. O. 2. . from. Do Now: Convert the following units of pressure. 249 . torr. to . atm. 10432 Pa to . kPa. 2534 . kPa. to mmHg. What causes the pressure of a gas in a closed container?. Impacts of gas molecules with walls of container. A gas mixture with a total pressure of 745 mmHg contains each of the following gases at the indicated partial pressures. CO. 2. – 125 mmHg. Ar. – 214 mmHg. O. 2. – 187 mmHg. The mixture also contains helium gas. What is the partial pressure of the helium gas?.