Question

Which of the following is NOT a feature of the sympathetic division of the ANS?

Group of answer choices

It has long postganglionic fibers

It has long preganglionic fibers

Many of its ganglia are directly adjacent to the spinal column

It originates in the thoracolumbar region of the spinal cord.

Answer 1

B) It has long preganglionic fibers

Explanation: symptomatic nervous system is also called Thoracolumbar Outflow tract. As it's preganglionic fibres ralay in the thoracic T1 to T12 segment of spinal cord and L1 and L2 of lumbar segment. (T1-L2). Here they form sympathetic ganglion chain. Its preganglionic fibers are short they synapse in the sympathetic gangli lying along the side of the spinal cord. Post ganglonic fibers are long.

parasympathetic system is also called Craniosacral Outflow tract. (Cranial nerves 3,7,9,10 + S2 S3 and S4). Its preganglionic fibers are long which synapse at ganglia lying near to the visceral organs. Its postganglionic fibers are short