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  • Circulatory System
  • The rate of heart beat is under the control of ____________.
Multiple choice

The rate of heart beat is under the control of ____________.

  1. vagus nerves

  2. depressor muscles

  3. abducens nerves

  4. cardiac muscles

  5. palatine nerves

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A Correct answer
Explanation

These are the mixed nerves innervating the muscles of larynx, pharynx, oesophagus, gullet, stomach, heart, etc.

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