how many pairs of sympathetic ganglia are preant in ans
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the answer is 22 pairs
Explanation:
there are usually 21 or 22 pairs of these ganglia -3 in the cervical region ,10 or 11 in the thoracic Region, 4 in the lumbar region -and 4 in the sacral region- and a single unpaired ganglion lying in front of the coccyx ,called the ganglion impar.
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Ganglia are ovoid structures containing cell bodies of neurons and glial cells supported by connective tissue. Ganglia function like relay stations - one nerve enters and an other exits. The structure of ganglia is illustrated by the example of the spinal ganglion.
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