Question

How many pairs of sympathetic ganglia are present in ANS?
A) 10
B) 12
C) 22
D) 31

Answer 1

The ganglia are a cluster of cells of afferent or efferent nerves. In addition, there are 22 sympathetic ganglia found on either side of the spinal cord.

Complete answer: The ANS (Autonomous Nervous System) could be a division of PNS that plays a vital role in fine standardization of the body's internal setting. For the management of the bodily functions not consciously directed, like respiration, the heartbeat, and biological process processes. Structurally and functionally, the ANS is classified into 2 separate schemes: the Sympathetic and Parasympathetic system nervosum. Its job is to deliver information to the body regarding stress and once the body is in danger, and this can be the world answerable for the fight-or-flight response. Their unit typically 21-23 pairs of these ganglia unit gifts, that is, 3 at intervals in the cervical region, eleven at intervals in the pectoral region, four at intervals in the piece region, and 4-5 at intervals in the sacral region. Within the cervical region (cervical ganglia), eleven within the body part region (note the presence of the symmetrical cervical thoracic ganglia), four within the body part region, and 4-5 within the sacral region. There are twenty 2 pairs of Paravertebral sympathetic ganglia on either side of the rachis nevertheless as prevertebral ganglia at intervals the abdomen and pelvis and besides intermediate ganglia.
Hence 22 i.e. possibility C is that the correct answer.

Note: The afferent nerve is the input nerve which brings information while the different nerve is the output nerve that carries out the information to different organs of the body. Some preganglionic fibres experience the sympathetic chain while not synapsing so is a part of to make visceral nerves emanating in some collateral ganglia.