Question

The biconcave formed elements that lack mitochondria and a nucleus are called: macrophages red blood cells white blood cells platelets

Answer 1

Erythrocytes, or red blood cells, are the most numerous of the formed elements. Erythrocytes are tiny biconcave disks, thin in the middle and thicker around the periphery. The shape provides a combination of flexibility for moving through tiny capillaries with a maximum surface area for the diffusion of gases.