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.
There's about 3 *1010 capillaries in the human body, according to this link. The lifelength, from other posts, of a redblood cell is 120 days, and they go through the body once every minute. That means that they go through your body about 172 800 times, not enough to visit every capillary. There's around 100 organs, so they'll likely see all of those.