Question

Concentrations of oxygen and carbon dioxide in the air and in the body are measured as "partial pressure", which is written as pO? and pCO?. The units to measure partial pressure are "mmHg" which is pronounced "millimeters of mercury", a standard unit for measuring the pressure of gases. Below is a data table showing the pO? and pCO? in the lungs and in the blood. | | Air inhaled into lungs | Blood flowing into lungs | |---|---|---| | pO? | 150 mmHg | 100 mmHg | | pCO? | 0 mmHg | 40 mmHg | Knowing that oxygen and carbon dioxide always move by simple diffusion: (a) Which way will oxygen move? (from the lungs into the blood / from the blood into the lungs / both ways equally)? (b) Which way will carbon dioxide move? (c) Explain why you answered (a) and (b) the way you did.

          Concentrations of oxygen and carbon dioxide in the air and in the body are measured as "partial pressure", which is written as pO? and pCO?. The units to measure partial pressure are "mmHg" which is pronounced "millimeters of mercury", a standard unit for measuring the pressure of gases.

Below is a data table showing the pO? and pCO? in the lungs and in the blood.

| | Air inhaled into lungs | Blood flowing into lungs |
|---|---|---|
| pO? | 150 mmHg | 100 mmHg |
| pCO? | 0 mmHg | 40 mmHg |

Knowing that oxygen and carbon dioxide always move by simple diffusion:

(a) Which way will oxygen move? (from the lungs into the blood / from the blood into the lungs / both ways equally)?

(b) Which way will carbon dioxide move?

(c) Explain why you answered (a) and (b) the way you did.

Concentrations of oxygen and carbon dioxide in the air and in the body are measured as "partial pressure", which is written as pO? and pCO?. The units to measure partial pressure are "mmHg" which is pronounced "millimeters of mercury", a standard unit for measuring the pressure of gases.

Below is a data table showing the pO? and pCO? in the lungs and in the blood.

| | Air inhaled into lungs | Blood flowing into lungs |
|—|—|—|
| pO? | 150 mmHg | 100 mmHg |
| pCO? | 0 mmHg | 40 mmHg |

Knowing that oxygen and carbon dioxide always move by simple diffusion:

(a) Which way will oxygen move? (from the lungs into the blood / from the blood into the lungs / both ways equally)?

(b) Which way will carbon dioxide move?

(c) Explain why you answered (a) and (b) the way you did.

Added by Christopher A.

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