this happens because of the vien build up structure in order for the blood to pump the thick blood... now go get your since text book class....
as the bell rang joise and the girls were stil taking about the incident that happen to Johan.
Because blood in veins is under lower pressure than in arteries, so they do not need as many collagen fibres. In addition, as veins already have a wide diameter, they do not need to dilate that much hence they also dont contract that much (as opposed to artieries), so they have less elastic recoil, thus they have less elastic fibres. :)
Capillaries do not have a thick wall. These are very small, thin, tiny blood vessels. Their main function is to bring blood from larger blood vessels into every furthest part of your body, and to remove cellular wastes from those areas.
Veins. Veins are blood vessels that carry blood from tissues and organs back to the heart; they have thin walls and one-way valves.
no they dont have veins Yes, fish have veins. Fish have blood an veins are the necessary ways for all living beings to have their blood circulated throughout their body.
it dont
if you freeze ice cream like all the way through and form a triangle it turns in to an elastic band!! JOKES!!! Dont be stupid ice cream isn't elastic, i mean come on!! do you have a brain....ooooops silly question you ovbiously DONT! :|
i dont effin know i dont effin know
No they don't. Because they dont have water in side them
i dont kno w ! gets ?
i dont think so
dont be silly
Dont judge