What is the structure of red blood cells?

Red blood cells, also called erythrocytes, are the most abundant cell type in the blood. Other major blood components include plasma, white blood cells, and platelets. The primary function of red blood cells is to transport oxygen to body cells and deliver carbon dioxide to the lungs. read more

Red blood cells circulating in the blood stream. RBCs are small, disc-shaped cells that measure 7 – 8 micrometers (μm) in diameter. The diameter of a red blood cell. read more

Red blood cells have an unusual structure compared to other cells in the human body. It lacks a nucleus, mitochondria or endoplasmic reticulum. However enzymes within the red blood cells allow it to produce small amounts of energy (ATP from glucose). read more