10 Questions
In gas exchange, how do O2 and CO2 molecules cross the A/C membrane in the lungs and the erythrocyte membrane in the red blood cells?
By simple diffusion down concentration gradients
What is the main function of gas transport in the blood?
Carrying oxygen from the lungs to the tissue cells and carbon dioxide from the tissue cells to the lungs
What is the partial pressure of alveolar carbon dioxide (PACO2) directly proportional to?
VCO2 (minute cellular CO2 production)
What is ventilation?
The mechanical process that moves ventilatory gases between the atmosphere and the alveoli
How do gas molecules cross the A/C membrane and the cell membranes?
By simple diffusion
Gas exchange refers to the movement of ventilatory gases between the atmosphere and the alveoli.
True
Gas molecules cross the A/C membrane and the cell membranes by active transport.
False
Gas transport refers to the mechanisms by which the blood carries carbon dioxide from the lungs to the tissue cells and oxygen from the tissue cells to the lungs.
False
The partial pressure of alveolar carbon dioxide (PACO2) is directly proportional to minute cellular CO2 production (VCO2).
True
Simple diffusion is the process by which gas molecules cross the A/C membrane and the cell membranes.
True
Test your knowledge of gas exchange and transport with this quiz. Dive into the mechanics of ventilation, gas pressures, and gradients to solidify your understanding of this vital physiological process. Ideal for students studying respiratory physiology and related fields.
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