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NEET2011ZoologyNeural Control and CoordinationActual

Sympathetic nervous system induces

Options

  1. Aheart beat
  2. Bsecretion of digestive juice
  3. Csecretion of saliva
  4. DAll of the above

Correct answer

A. heart beat

Step-by-step solution

Medulla of brain has two regions affecting heart rate-(i) cardiac inhibitory centre, (ii) cardiac accelerator centre. Sensory nerves originating from the accelaertor centre run parallel to the spinal cord and enter the sino-artial node. Stimulation by these nerves, which are the part of sympathetic nervous system cause an increase in heart beat

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