Neural Control and Coordination — Bio Zoology STD 11 — Question

The autonomic neural system is auto functioning and self governed. It is a part of peripheral neural system that innervates smooth muscles, glands and cardiac muscle. This system controls and coordinates the involuntary activities of various organs. ANS controlling centre is in the hypothalamus.Autonomic neural system comprises the following components:

1. Preganglionic neuron whose cell body is in the brain or spinal cord; its myelinated axon exits the CNS as part of cranial or spinal nerve and ends in an autonomic ganglion.
2. Autonomic ganglion consists of axon of preganglionic neuron and cell bodies of postganglionic neuron.
3. Postganglionic neuron conveys nerve impulses from autonomic ganglia to visceral effector organs.
4. The autonomic neural system consists of Sympathetic neural system and Parasympathetic neural system.