So that they can flow to different parts of your body quickly
so that they can fit through blood vessels
Capillaries
blood cells are small and red
well you dont want your blood cells to big or to small the red blood cells are what keeps your blood flowing the correct way so yes red blood cells are life threatening.
Because they Are so small they can't get out.
Red blood cells are too small to contain blood vessels. They are cells and they travel in blood vessels.
The blood vessels you speak of are called capillaries (I think)
Plants do not have blood so they do not produce blood cells.
Microvessels, such as capillaries, are so small that blood cells must pass through them in single file. This allows for efficient exchange of oxygen and nutrients between blood and tissues. The small size of these vessels also facilitates the removal of waste products from tissues.
yes it is true because when you body grows, trillions of blood cells are made. But sence cells are so small it does not effect you size very much.
No, a Capillary is a small blood vessel that delivers oxygen and other nutrients to cells.
Small and red, rich in haemoglobin, carry oxygenated blood to tissues of the body