Use of Inert Gases to Study the Interaction of Blood Flow and Diffusion during Passive Absorption from the Gastrointestinal Tract of the Rat

AUTOR(ES)

Levitt, Michael D.

RESUMO

Measurement of the relative absorption rates of inert gases (H2, He, CH4, SF6, and 133Xe) was used to investigate the interaction between diffusion and blood flow during passive absorption from the stomach, small bowel, and colon of the rat. If uptake is blood flow limited, the gases should be absorbed in proportion to their solubilities in blood, but if diffusion limited, uptake should be proportional to the diffusion rate of the gases in mucosal tissues.

Documentos Relacionados

• Use of Inert Gases and Carbon Monoxide to Study the Possible Influence of Countercurrent Exchange on Passive Absorption from the Small Bowel
• Use of Inert Gases for the Preservation of Nuclear Blood Cells
• Inhibition of the absorption of paraquat from the gastrointestinal tract by adsorbents
• Alterations in Distribution of Blood Flow to the Lung's Diffusion Surfaces During Exercise
• Use of laminar flow and unstirred layer models to predict intestinal absorption in the rat.