By what transport method does oxygen enter the blood from the alveoli? By what method is oxygen transported to the body tissues from the lungs? By what method does oxygen enter the body tissues from the blood? a. Diffusion, bulk flow, diffusion b. Bulk flow, bulk flow, diffusion c. Bulk flow, diffusion, carrier proteins d. Diffusion, diffusion, carrier proteins e. Bulk flow, diffusion, bulk flow Solution b. Bulk flow, bulk flow, diffusion bulk flow carries air or water, relatively high in O2 and low in CO2, past a respiratory surface. The flow is usually propelled by muscular movements. Bulk flow of blood transports gases between the respiratory system and the tissues. Blood is pumped through the body by the heart. Diffusion transfers O2 out of the capillaries and into nearby tissues, and transfers CO2 from the tissues into capillaries.

1. By what transport method does oxygen enter the blood from the alveoli? By what method is
oxygen transported to the body tissues from the lungs? By what method does oxygen enter the
body tissues from the blood?
a. Diffusion, bulk flow, diffusion
b. Bulk flow, bulk flow, diffusion
c. Bulk flow, diffusion, carrier proteins
d. Diffusion, diffusion, carrier proteins
e. Bulk flow, diffusion, bulk flow
Solution
b. Bulk flow, bulk flow, diffusion
bulk flow carries air or water, relatively high in O2 and low in CO2, past a respiratory surface.
The flow is usually propelled by muscular movements. Bulk flow of blood transports gases
between the respiratory system and the tissues. Blood is pumped through the body by the heart.
Diffusion transfers O2 out of the capillaries and into nearby tissues, and transfers CO2 from the
tissues into capillaries