IMMUNOLOGY

Detailed explanation-1: -The shape of the human red blood cell is known to be a biconcave disk. It is evident from a variety of theoretical work that known physical properties of the membrane, such as its bending energy and elasticity, can explain the red-blood-cell biconcave shape as well as other shapes that red blood cells assume.

Detailed explanation-2: -External Structure RBCs are disc-shaped with a flatter, concave center. This biconcave shape allows the cells to flow smoothly through the narrowest blood vessels. Gas exchange with tissues occurs in capillaries, tiny blood vessels that are only as wide as one cell.

Detailed explanation-3: -A biconcave disc-also referred to as a discocyte-is a geometric shape resembling an oblate spheroid with two concavities on the top and on the bottom.

Detailed explanation-4: -The biconcave shape and corresponding deformability of the human red blood cell (RBC) is an essential feature of its biological function.

Detailed explanation-5: -Complete answer: Human erythrocytes or RBCs have a state of the plate that seems, by all accounts, to be ‘collapsed’ or nearly leveled in the center. This biconcave shape permits RBCs to twist and stream easily through the tightest veins in the body.