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29/08/2020 7:02 pm
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Sympathetic nerves in mammals arise from
(a) sacral region
(b) cervical region
(c) 3rd, 7th, 9th, 10th cranial nerves
(d) thoracico-lumbar region
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29/08/2020 7:03 pm
(d) thoracico-lumbar region
Explanation:
Sympathetic nerves in mammals arise from thoracico–lumbar region. Sympathetic nervous system is represented by a chain of 21 sympathetic ganglion on either side of spinal cord. It receives preganglionic sympathetic fibres from the spinal cord which make these exit along with thoracic and lumbar region.