関連ワード:
which type of muscle is located only in the heart which type of muscle is found only in the heart which type of muscle is only found in the heart wall which type of muscle is found only in the heart and contracts continuously without tiring which type of muscle is only in the heart which kind of muscle is only found in the heart which type of muscle tissue is only found in the heart which type of involuntary muscle is found only in the heart which type of muscle is found in the heart which type of muscle is found in the heart check all that apply
