Answer:
Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). The sympathetic nervous system (SNS) releases the hormones (catecholamines - epinephrine and norepinephrine) to accelerate the heart rate.
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<em>Hope</em><em> </em><em>it</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>you</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em></h2>
Answer : D all of the above
Efferent Nerves send signals to your brain to move your muscles.
(B) 2, 1, 19 ... is the answer
Answer: C - potassium
Explanation:
Its importance in keeping your blood comnents equalized is undeniable.