Monday, July 12

Human Heart

Did you give your friends valentines and little heart-shaped candies on Valentine's Day? Your have you ever blessed any one form the bottom of your heart or may be cursed someone from the bottom of your heart? We have been hearing that many feelings come from the heart. This simply means that Heart is the most important part in a Human body.

The human heart is a pear-shaped structure about the size of a fist. The heart is an amazing organ. It is responsible for supplying the body with oxygenated blood. Each time the heart beats, it exerts a pressure on the veins and arteries called Blood Pressure. The heart is one of the most important organs in the entire human body. It is really nothing more than a pump, composed of muscle which pumps blood throughout the body, beating approximately 72 times per minute of our lives.

How does the heart beat?

Before each heart beat, the heart fills with blood. Then its muscle contracts to squirt the blood along. When the heart contracts, it squeezes — try squeezing your hand into a fist. That's sort of like what the heart does so it can squirt out the blood. The Heart does this all day and all night, all the time.

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