Ok, it's me !! Looking at any image of the veins or arteries in the body looks like a map of a river, but backwards (i.e. from the sea, to smaller rivers and streams etc). But what I didn't realise was this...
"Capillaries connect the ends of the smallest arteries (arterioles) with the beginnings of the smallest veins (venules) to send the blood back to your heart through the veins".
Foolish, maybe, but hands up, and problem solved. Thanks for you input people.
"Capillaries connect the ends of the smallest arteries (arterioles) with the beginnings of the smallest veins (venules) to send the blood back to your heart through the veins".
Foolish, maybe, but hands up, and problem solved. Thanks for you input people.
