• the right side of the heart is completely separated from the left side of the heart by means of a muscular wall called the median septum which runs down the middle of the heart. The median septum prevents the deoxygenated blood in the right side from mixing with the oxygenated blood on the left side. Mixing of deoxygenated blood with oxygenated blood will reduce the amount of oxygen carried to the tissue cells.

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>The difference in muscle thickness between the left and right side of the heart. What is the significance of this structure difference?

• In a sense, the heart is really two linked pumps, the left heart and the right. Both sides pump the same amount of blood, but to different locations at different pressures. The right side pump (right ventricle) pumps oxygen-depleted blood that has returned from the body to the lungs for reoxygenation. This is a short trip and requires little pressure development, so the right ventricle is rather thin walled, like a fireplace bellows. The left side (left ventricle) is the real workhorse, pumping oxygenated blood that has returned from the lungs (the right and left side of the heart are thus connected) to the entire body. That means moving blood through an incredible maze of blood vessels from the top of the head to the toes! Consequently it must develop more pressure each beat (about 120mmHg at rest). The left heart muscle is thicker as a result, just as your bicep would become thicker if you had to lift heavy weights with it all .

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DO YOU KNOW?

• The aorta is almost the diameter of a garden hose!

• Women’s hearts beat faster than men’s.The main reason for this is simply that on average women tend to be smaller than men and have less mass to pump blood to. But women’s and men’s hearts can actually act quite differently, especially when experiencing trauma like a heart attack, and many treatments that work for men must be adjusted or changed entirely to work for women.

• The heart, which weighs 9 -11 ounces in an adult, consists chiefly of muscle and can perform enough work in one hour to lift 3,000 pounds, roughly the weight of a small car, about one foot off the ground. (9 ounces-approximately 255g, 11 ounces- approximately 312 g).

Credits

-http://11facts.blogspot.com/2009/05/11-interesting-random-facts.html

-http://www.businesscreditcards.com/bootstrapper/100-weird-facts-about-the-human-body/

-http://wiki.answers.com/Q/What_are_interesting_facts_about_the_heart