1) what is the mechanism of gas transfer in the lungs a) absorbtion b) active transport c) diffusion d) osmosis 2) what makes ideal conditions for gas transfer between lungs and bloodstream a) dense capillary network b) large surface area c) close proximity of tissue to capillary d) walls one cell thick e) moist airspace f) all of the above 3) what is the CO2 concentration of blood in the capillary bed prior to arriving at the lung sacs a) low concentration b) high concentration 4) what is the O2 concentration of blood in the capillary bed after leaving the lung sacs a) low concentration b) high concentration 5) what is the O2 concentration of blood in the capillary bed prior to arriving at the lung sacs a) low concentration b) high concentration 6) what is the CO2 concentration of blood in the capillary bed leaving the lung sacs a) low concentration b) high concentration 7) what is the name of the tiny lung sacs a) Alveoli b) bronchiole c) air sac 8) what substance lines the alveoli to aid gas exchange a) water b) saliva c) mucus d) cells 9) what is the trachea and what supports it a) the throat b) the windpipe c) the chest bone d) lignin e) cartilage rings f) muscle 10) where is the oxygen being transported to in the bloodstream a) the lungs b) the brain c) the respiring cells d) the body

Absorbtion in the Lungs

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