Answer:
Cardiac muscle differs from skeletal muscle in that it exhibits rhythmic contractions and is not under voluntary control. The rhythmic contraction of cardiac muscle is regulated by the sinoatrial node of the heart, which serves as the heart's pacemaker.
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Answer:
I would help there was a senerio to go along with this question?
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Make sure to apply a sunscreen of at least 30 SPF or higher to be safe from UV rays. Make sure to apply topically evenly and generously. Reapply after 2 hours, swimming, or drying.
