George Washington died after his physician treated his sore throat with bloodletting, but don't let that stop you from ...

Red blood cell Carry oxygen. Contain haemoglobin (rich in iron) to carry oxygen. Biconcave shape to provide a large surface area for the diffusion of oxygen. No nucleus to provide more space for ...

In each cubic millimetre of blood, there are more than five million red blood cells, thousands of white cells and 250,000 to 450,000 platelets for blood clotting. Every second, 2.5 million new red ...

its exact role in the endothelial cells that make up the circulatory system, the formation of new blood vessels (angiogenesis) and vascular function was not yet known. "The study reveals for the ...

To create a model of the human circulatory system, biologist Mátyás Bittenbinder teamed up with chemist Jeroen Kool, both researchers at Vrije University Amsterdam. They cultured endothelial cells ...

Red blood cells deliver oxygen and take away rubbish ... This video recaps all the key learning points about the circulatory system. Looking for more teaching resources to share with your students?