Sympathetic fibers arise only from the __________ region(s)of the spinal cord.
A) cervical,thoracic,and lumbar
B) thoracic and lumbar
C) thoracic
D) cervical
E) lumbar

Question

Quizplus · Accepted Answer

Sympathetic fibers arise from the thoracic and lumbar regions of the spinal cord, known as the thoracolumbar region. This region includes the sympathetic chain ganglia, which contain cell bodies of sympathetic neurons. The cervical region contains the cell bodies of sympathetic neurons that innervate structures in the head and neck. The lumbar region innervates structures in the lower limbs. Therefore, the correct answer is B.

Sympathetic Fibers Arise Only from the __________ Region(s)of the Spinal