It pumps the blood in and out of the heart. If I remember right I think that’s it.
I think it means meal! For example, with the word "postprandial", it means after eating a meal. Hope I helped! :)
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I won’t answer the question.
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Both tests test the endurance and strength of muscle, but they evaluate muscles in different areas of the body. The curl-up test is used for the abdominal muscles while the arm hangs test, as is said in its name, test the arm muscles.
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