MICROANATOMY

Detailed explanation-1: -Healthy human adults produce about 200 billion red blood cells (RBCs) daily to replace those lost by senescence. This process, termed erythropoiesis, is exquisitely regulated by an oxygen-sensing mechanism that has evolved to maintain RBC numbers within a narrow physiological range 1– 3.

Detailed explanation-2: -It is the millions of iron-containing haemoglobin proteins that make blood red. Molecules with more oxygen bound to them are brighter red. When the red blood cells reach tissues that need oxygen, the oxygen is released from the haemoglobin and diffuses into the cells where it is used to make energy.

Detailed explanation-3: -Red blood cells contain a protein called haemoglobin, which carries oxygen from your lungs to all parts of your body. Haemoglobin is what makes your blood red. Red blood cells also help remove waste products from your body, such as carbon dioxide.

Detailed explanation-4: -Important among these are several vitamins such as riboflavin, vitamin B12, and folic acid, necessary for the maturation of the developing red cell; and vitamin B6 (pyridoxine), required for the synthesis of hemoglobin. The secretions of several endocrine glands influence red cell production.