Each 2.54 square centimetre (a square inch) of human skin has six metres (20ft) of blood vessels. Veins hold about 65 per cent of the body's blood and have one-way valves tohelp blood move.

What Triggers Vasovagal Syncope? Vasovagal syncope happens when something triggers the vasovagal reflex, which causes blood vessels to widen (dilate) suddenly. Dilation of the blood vessels causes a ...

The convention defines the territorial limits a country can claim and whether a vessel is under the laws of its Flag State or also those of the state whose waters it is lying in. Vessels are free to ...