As well as motor neurons, the nucleus ambiguus in its " external formation " contains cholinergic preganglionic parasympathetic neurons for the heart.
32.
The adrenal medulla is driven by the sympathetic nervous system via preganglionic fibers originating in the thoracic spinal cord, from vertebrae T5 T11.
33.
In 1891 Sir Victor Horsley proposed the first open surgical procedure for the disorder involving the sectioning of preganglionic rootlets of the trigeminal nerve.
34.
Once the voluntary signal to begin voiding has been issued, neurons in pontine micturition center fire maximally, causing excitation of sacral preganglionic neurons.
35.
After joining the lingual nerve, the preganglionic fibers synapse at the submandibular ganglion and send postganglionic fibers to the sublingual and submandibular salivary glands.
36.
The cell that sends its fiber is called a preganglionic cell, while the cell whose fiber leaves the ganglion is called a postganglionic cell.
37.
However, the ciliary ganglion is not simply a relay station connecting " preganglionic " to " postganglionic " nerve fibers.
38.
The parasympathetic nerve supply comes from the parasympathetic preganglionic neurons in the sacral spinal cord and also terminates in the longitudinal and circular smooth muscle layers.
39.
The preganglionic, or first, neuron will begin at the outflow and will synapse at the postganglionic, or second, neuron s cell body.
40.
As mentioned previously, the preganglionic cells of the sympathetic nervous system are located between the first thoracic segment and third lumbar segments of the spinal cord.
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