A 41-year-old member asked:
How does control of the contraction of skeletal muscles to the cardiac muscles happen?
1 doctor answer • 1 doctor weighed in
Cardiology 34 years experience
Different: Cardiac muscle is different than skeletal muscle (arms, legs, back, etc). Skeletal muscle contracts when stimulated by the nerves that supply it. Heart muscle fires spontaneously as various electrolytes change concentration in the surrounding tissue. The area called the sinus node typically passes the threshold first thus firing the electrical impulse. This area is modulated by brain inputs.
5.1k viewsAnswered >2 years ago
Last updated May 20, 2013
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