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2. Composition of the human body - Wikipedia

   en.wikipedia.org/wiki/Composition_of_the_human_body

   Pie charts of typical human body composition by percent of mass, and by percent of atomic composition (atomic percent) Body composition may be analyzed in various ways. This can be done in terms of the chemical elements present, or by molecular structure e.g., water , protein , fats (or lipids ), hydroxyapatite (in bones), carbohydrates (such ...

3. Anatomy of the human heart - Wikipedia

   en.wikipedia.org/wiki/Anatomy_of_the_human_heart

   The heart is a muscular organ situated in the mediastinum.It consists of four chambers, four valves, two main arteries (the coronary arteries), and the conduction system. The left and right sides of the heart have different functions: the right side receives de-oxygenated blood through the superior and inferior venae cavae and pumps blood to the lungs through the pulmonary artery, and the left ...

4. Heart - Wikipedia

   en.wikipedia.org/wiki/Heart

   The heart is a muscular organ found in most animals.This organ pumps blood through the blood vessels. [1] Heart and blood vessels together make 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]

5. Cardiac physiology - Wikipedia

   en.wikipedia.org/wiki/Cardiac_physiology

   Cardiac physiology or heart function is the study of healthy, unimpaired function of the heart: involving blood flow; myocardium structure; the electrical conduction system of the heart; the cardiac cycle and cardiac output and how these interact and depend on one another.

6. How Long You Should Take to Walk 10,000 Steps - AOL

   www.aol.com/long-walk-10-000-steps-175000734.html

   How long it takes to walk 10,000 steps depends on a few factors, but there are ways to estimate the time. Here's how to do that—and why you should walk more.

7. Best CD rates today: Done with shopping deals? Lock in ... - AOL

   www.aol.com/best-cd-rates-today-done-with...

   Terms of one to five years or longer can help you lock in today’s highest APYs before interest rates inch lower. Rate of return. Look for the highest APY for the term you’re interested in.