Question

Oxygen and carbon dioxide are exchanged in the lungs and through all cell membranes by ________.

a. diffusion
b. filtration
c. active transport
d. osmosis
Complete the following statement using the choices below. Air moves out of the lungs when the pressure inside the lungs is _________.
a. equal to the pressure in the atmosphere.
b. greater than the intra-alveolar pressure.
c. less than the pressure in the atmosphere.
d. greater than the pressure in the atmosphere.
Which of the following is not an event necessary to supply the body with O2 and dispose of CO2?
a. external respirationb. pulmonary ventilationc. blood pH adjustmentd. internal respiration

Answer 1

a. diffusion ,d. greater than the pressure in the atmosphere, c. blood pH adjustment

Step-by-step explanation: