The cardiovascular system, the human body’s circulatory system, is a vital network of organs and tissues such as the blood, heart, and blood vessels responsible for transporting blood. The circulatory ...

This short film offers a look at respiration and a tour around the circulatory system and digestive system in the human body, through blood vessels and into mitochondria. There is a detailed ...

PRESENTER:'Ella has P.E. today, and her circulatory system is going to have some exceptional ... Biological processes of the human body. You could recreate the blood cycle / circulation by using ...