How does the heart work? (brief summary)

Question

anonymous · Answer

Theres like 5,000 answers to your question. 
The heart is a muscle, just like any muscle it expands and contracts. But unlike other muscles in your body the heart pumps blood as it expands and contracts.
Hope this is what your looking for

anonymous · Answer

The heart is essential for your survival! Your heart is constantly working, even when you are resting.

The heart, blood and blood vessels together make up the circulatory system. The heart pumps the blood through the blood vessels to all the different tissues of the body. This blood carries water, oxygen and nutrients. Blood is also important for removing waste products from the body.

The heart sits between the lungs in the chest, where it is well-protected by the rib cage.
The heart is the most important organ in our body. It is basically a complex pump, responsible for circulating blood, oxygen and nutrients around the body.

anonymous · Answer

Thanks guys :)

anonymous · Answer

Welcome