Medical reasons for gender selection can also be psychological: a single female may feel better equipped to have a daughter than a son; parents who lost a child may feel a strong need for a child of the same gender.
It is considered that the lining of the stomach is replaced every 5 -10 days due to the highly acidic nature of stomach contents and the need to protect against damage.The process is continual with respect to shedding of cell layers, and there are multiple protective measures to look after the vulnerable surface.t is considered that the lining of the stomach is replaced every 5 -10 days due to the highly acidic nature of stomach contents and the need to protect against damage. The process is continual with respect to shedding of cell layers, and there are multiple protective measures to look after the vulnerable surface.
120-day life span, an RBC makes about 75,000 round trips between the lungs and tissues. At the end of its life, it returns to the bone marrow where it is removed by the reticuloendothelial system (particularly the liver, bone marrow, and spleen).