Majority of your blood comes from the marrow of your bones :p Blood relies on protein and zinc as bones rely on calcium and phosphorus.
It will keep going until is ready to stop.
Red blood cells, when mature, have no nucleus and can not reproduce.
White blood cells can reproduce in the bloodstream, because they have a nucleus, unlike the red blood cells, which lack a nucleus, and are produced in their millions by the bone marrow.
with help of liver
yes
how will blood flow out in case an artery is cut
Yes platelets form a sticky clot when a blood vessel is cut.
Mature red blood cells do not reproduce. Blood is produced in red bone marrow from precursor cells.
mitosis
Short Cut Draw Blood was created in 1975-12.
Red blood cells are produced by stem cells in bone marrow.
No, there is no limitation on people of different blood types reproducing.