So we have this amazing muscle which just carries on banging away for 50 to 100 years without even stopping !! that is incredible.
And it manages to oxygenate our blood and push it round our body, and then when the blood returns, re-oxygenate it and send it on it's way.
And we have miles of arteries/veins/vessels/capillaries .... but we don't have return valves, or mid point pumps...
So how the hell does the blood get back from your earlobe to you heart when all the heart does is pump?
And blood is thick and needs pushing.... I'm wondering how on earth we don't get blockages (apart from clots) and trouble all over !
And it manages to oxygenate our blood and push it round our body, and then when the blood returns, re-oxygenate it and send it on it's way.
And we have miles of arteries/veins/vessels/capillaries .... but we don't have return valves, or mid point pumps...
So how the hell does the blood get back from your earlobe to you heart when all the heart does is pump?
And blood is thick and needs pushing.... I'm wondering how on earth we don't get blockages (apart from clots) and trouble all over !
