EXPLAIN PNS?

Asked by Manik sharma | 4th Sep, 2010, 09:29: PM

Expert Answer:

The peripheral nervous system or PNS includes sensory receptors, sensory neurons, and motor neurons. Sensory receptors are activated by a stimulus (change in the internal or external environment). The stimulus is converted to an electronic signal and transmitted to a sensory neuron. Sensory neurons connect sensory receptors to the CNS. The CNS processes the signal, and transmits a message back to an effector organ (an organ that responds to a nerve impulse from the CNS) through a motor neuron.

Answered by  | 4th Sep, 2010, 11:32: PM

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