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Football fans had a lot to say after discovering the LinkedIn profile of former New York Giants star and two-time Super Bowl champion Justin Tuck. The 42-year-old Justin Tuck has been mostly out of ... Total Pro Sports: NFL Fans Were Shocked After Discovering “Legit” LinkedIn Profile Of Former New York Giants Star Justin Tuck [PHOTO] NFL Fans Were Shocked After Discovering “Legit” LinkedIn Profile Of Former New York Giants Star Justin Tuck [PHOTO] Heart, organ that serves as a pump to circulate the blood.
Understanding the Context
It may be as simple as a straight tube, as in spiders and annelid worms, or as complex as the four-chambered double pump that is the center of the circulatory system in humans, other mammals, and birds. Learn more about the heart in this article. The heart is a muscular organ found in humans and other animals. This organ pumps blood through the blood vessels.
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Key Insights
[1] The heart and blood vessels together make up the circulatory system. [2] The pumped blood carries oxygen and nutrients to the tissue, while carrying metabolic waste such as carbon dioxide to the lungs. [3] In humans, the heart is approximately the size of a closed fist and is ... Your heart is a vital organ that keeps blood pumping through your body. Learn more about your heart.
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Learn more about the American Heart Association's efforts to reduce death caused by heart disease and stroke. Also learn about cardiovascular conditions, ECC and CPR, donating, heart disease information for healthcare professionals, caregivers, and educators and healthy living. American Heart Association | To be a relentless force for a world of ...