النتائج (
الإنجليزية) 1:
[نسخ]نسخ!
First: the heartHeart Member of muscle Conical Works as a pump, When extending the heart muscle تتهيؤ reception and retracts when it pumps blood out. The heart consists of four chambers and is the right atrium, right ventricle, left atrium and left ventricle.
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