Which of the following statements about the autonomic nervous system is INCORREC

Question

Which of the following statements about the autonomic nervous system is INCORRECT? The adrenal medulla is a sympathetic ganglion The ganglia of the sympathetic division are usually close to the spinal cord The preganglionic fibres in the parasympathetic division are usually long compared to the postganglionic fibres The parasympathetic nerves arise from the brain stem and the sacral region of the spinal cord The sympathetic division mediates responses that allow the body to respond to flight and fright situations

Explanation / Answer

Adrenal medulla, part of the adrenal gland, is a modified sympathetic ganglion. The adrenal medulla is made up of medullary cells that are modified postganglionic cells of the autonomic nervous system. These cells are simply the modified neurons that have lost their axons and dendrites and have received innervations from the corresponding preganglionic fibers. So, the correct option is option A, the adrenal medulla is a sympathetic ganglion.

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