Describe the specialized group of muscle cells

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Reference no: EM13717160

Explain the given questions

Question 1- What specialized group of muscle cells acts as a pacemaker for the heart?

Question 2- When the human body is introduced to an extremely cold environment, in what manner does it react? Ie. What actions does the body take?

I need help to describe the specialized group of muscle cells.

Reference no: EM13717160

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