The circulatory system is the heart and all the blood vessels in the body which carry cells and substances to all its parts. The heart is a large muscular organ which pumps blood to the lungs and ...

Come along children, we’ve come to the hospital to learn how blood is moved around the body in the circulatory system ... of the heart then pumps this oxygen-poor blood back to the lungs ...

Despite this variability, the structure of the heart and major vessels tells us ... These modifications revolve around change from gill to lung respiration and the evolution of the double circulatory ...

While incredibly important, heart health isn’t just about diet and exercise — it’s influenced by a variety of everyday habits ...

Our circulatory system, a complex network of blood vessels, capillaries, veins, and arteries, plays a critical role in delivering oxygen and nutrients to every cell in the body. When blood flows ...

Brisk walking, running or jogging, swimming, cycling and jumping ropes are some of the best cardio exercises for your heart.

The heart is the size of a fist and weighs 0.45kg - the equivalent of about half a bag ofsugar. In an adult of average fitness, it beats around 70 times a minute (at rest) and 100,000 times a day.