Gas Exchange During Respiration

1.) The direction of gas movement is determined by:

DD. Partial pressure differences.

2.) Which of the following statements about partial pressures of gases is true?

BB. PO2 in the lung is greater than PCO2 in the blood; PC02 in the lungs is less than PC02 in the blood.

3.) Which of the following statements about partial pressures of gasses is true?

BB. P_O2 in blood is greater than P_O2 in tissues; P_CO2 in blood is less than P_CO2 in tissues

4.)Oxygen-rich blood is carried through pulmonary arteries from the lungs to the heart

False

5.)Oxygen-poor blood is carried through systemic veins from the body tissues back to the heart.

A.True.