The nerves that convey impulses from the sympathetic trunk ganglia to the distal half of the colon rectum bladder and reproductive organs are called the Pelvic.
The primary neurotransmitter of sympathetic ganglion neurons is norepinephrine except for the sweat glands, which receive sympathetic cholinergic innervation. Epinephrine released by the adrenal medulla acts as a neurohormone that amplifies sympathetic responses.
Sympathetic pathways leave the central nervous system via preganglionic neurons located in the intermediolateral columns of the spinal cord from thoracic to mid-lumbar levels. Sympathetic ganglia lie in two chains on either side of the vertebral column and near large abdominal arteries anterior to the vertebral column. Preganglionic axons are coming from the lateral grey column of the spinal cord.
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