The Heart
Beginning of paper
Introduction
You need your heart for all your body needs. It pumps about 2000
gallons of blood a day. It takes about 20 seconds for blood to reach every
cell in the body. An artery carries blood out from the heart. A vein carries
blood back to the heart. An average adult heart weighs about 10- ....
Middle of paper
.... The pulmonary vein takes the
blood out of the heart and takes it to the lungs.
Today we will talk about many different parts of the heart: The Three
Layers of Muscle, Atriums, Ventricles, Systole and Diastole, Treatments for the
Heart, Valves, and many Diseases.
The Three Layers of Muscle
The heart has three layers of a muscular wall. A thin layer of tissue,
the pericardium covers the outside, and another layer, the endocardium, lines
the inside. The myocardium is the mid ....
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Word count: 1535
Page count: 6 (approximately 250 words per page)
