U.S. doctors online nowAsk doctors free
A 41-year-old member asked:

How does control of the contraction of skeletal muscles to the cardiac muscles happen?

1 doctor answer1 doctor weighed in
Dr. Joseph Moore
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.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Educational text
Free
Talk to a doctor
24/7 visits - just $39!
50% off with $15/month membership

Related questions

A 42-year-old member asked:
1 doctor answer1 doctor weighed in
A 32-year-old male asked:
1 doctor answer2 doctors weighed in
A 40-year-old member asked:
1 doctor answer3 doctors weighed in
A 47-year-old member asked:
1 doctor answer1 doctor weighed in
A 32-year-old member asked:
1 doctor answer2 doctors weighed in

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Educational text
Free
Talk to a doctor
24/7 visits - just $39!
50% off with $15/month membership
Last updated May 20, 2013

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.