The circulatory system consists of one heart, five liters of blood, and approximately 96,000 kilometers of blood vessels, ...

Your daily habits impact blood flow more than you realize. Learn how small changes in movement, hydration, and sleep can ...

For nine months, you were enveloped in the warm, comfortable world of your mother's womb. Your every need was taken care of. The placenta supplied you with oxygen from your mother's blood, so your ...

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 ...

Each 2.54 square centimetre (a square inch) of human skin has six metres (20ft ... of pins and needles is caused by an impairment of blood circulation.