Human Heart (Anatomy): Diagram | 全台第三方支付網

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Your heart is an amazing organ. It continuously pumps oxygen and nutrient-rich blood throughout your body to sustain life. This fist-sized powerhouse beats (expands and contracts) 100,000 times per day, pumping 5 or 6 quarts of blood each minute, or about 2,000 gallons per day. So how does blood flow through the heart?

As the heart beats, it pumps blood through a system of blood vessels called the circulatory system. The vessels are elastic tubes that carry blood to every part of the body.

Blood is essential. In addition to carrying fresh oxygen from the lungs[1] and nutrients to your bodys tissues, it takes the bodys waste products, including carbon dioxide, away from the tissues. This is needed to sustain life and promote the health of all the bodys tissues.

There are three main types of blood vessels: