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Autonomic Nervous System: Sympathetic and Parasympathetic Divisions

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How many pairs of sympathetic ganglia are present in ANS?

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A
$22$
💡 Explanation:
  • The autonomic nervous system(ANS) is the part of the nervous system responsible for the control of the bodily functions not consciously directed, such as breathing, the heartbeat, and digestive processes.
  • Sympathetic ganglia deliver information to the body about stress and impending danger and are responsible for the familiar fight-or-flight response.
  • There are usually 22-23 pairs of sympathetic ganglia present in ANS: 3 in the cervical region (cervical ganglia), 11 in the thoracic region (note the presence of the stellate cervicothoracic ganglia), 4 in the lumbar region and 4-5 in the sacral region.
  • So, the correct answer is '22'.
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