please help i have a essay due tommarow
2006-11-15 16:14:14 · 3 answers · asked by teddy bear 2 in Science & Mathematics ➔ Biology
The heart is a powerful muscle slightly larger than your clenched fist. It works as a pump to send oxygen-rich blood through all parts of your body. Blood contains oxygen and nutrients that every cell in your body needs to survive. The oxygen-rich blood travels throughout the arteries and vessels, nourishing the body so that it can function properly.
Your heart will beat an average of 100,000 times per day. In that time, it pumps more than 4,300 gallons of blood throughout your entire body.
2006-11-15 16:36:25 · answer #1 · answered by purush bio 2 · 0⤊ 0⤋
it's the main part of the circulatory system. it pumps all the blood throughout your body, allowing each part to function properly. think of the inside of a car engine, if it helps.
2006-11-16 00:29:27 · answer #2 · answered by sweetiethatcares 3 · 0⤊ 0⤋
the heart pumps blood throughout our body. it pumps oxygenated blood to bring oxygen to the body's cells and at the same time unoxygenated blood is recycled back to pass through the lungs again.
2006-11-16 00:17:45 · answer #3 · answered by Gerry Z 3 · 0⤊ 0⤋