What Is the Primary Method by Which Materials Such as O₂,CO₂,and

question 116

Multiple Choice

What is the primary method by which materials such as O₂,CO₂,and nutrients are exchanged between the blood and surrounding tissues?

• A) passive diffusion of substances across the capillary wall down their concentration gradients
• B) active transport of materials across the capillary wall
• C) osmotic pressure drawing water and solutes out of the capillary and bringing these dissolved nutrients into contact with the tissue cells
• D) processes of ultrafiltration and reabsorption

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