Question

What will be the effect of high altitude trekking on your RBCs?

• A. Increase in size
• B. Decrease in size
• C. Increase in number
• D. Decrease in number

Answer 1

The correct option is C

Increase in number

The main function of RBCs is to carry and deliver oxygen to body tissues which is essential for cellular respiration.The oxygen saturation is very low in high altitudes. To maintain a constant supply of oxygen to body tissues to function normally, RBCs will increase in number.