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True or False: The parasympathetic nervous system consists of a CRANIAL component originating in the brain stem.
TRUE
What are the cranial components of the parasympathetic nervous system?
CN III
CN VII
CN IX
CN X
What does cranial nerve III innervate in the parasympathetic nervous system?
Pupillary constrictor muscle
What does CN VII innervate in the parasympathetic nervous system?
lacrimal gland (tears)
Submandibular and sublingual glands (salivary)
What does CN IX innervate in the parasympathetic nervous system?
Parotid gland (salivary)
What does CN X innervate in the parasympathetic nervous system?
Thoracic and abdominal visceral
The cervical sympathetic trunk is located (anterior/posterior) to the carotid arteries?
POSTERIOR
Pregangliionic nerve fibers originate from the upper ___ level of the spinal cord (T?-T?) and synapse in a cervical paravertebral ____.
thoracic
T1-T5
Ganglia
In regards to innervation of the thoracic viscera, preganglionic fibers originate where?
Upper thoracic spinal cord
(T1-T5)
In regards to innervation of the thoracic viscera, where to preganglionic nerve fibers synapse?
Upper thoracic paravertebral sympathetic ganglion
Where does the parasympathetic innervation of the thoracic viscera come from?
CN X- vagus nerve
in regards to the sympathetic supply to the abdominal viscera, preganglionic fibers synapse where?
With prevertebral ganglia located in the abdomen
List the thoracic splanchnic nerves.
greater splanchnic nerves- arise from the T5-T9
Lesser splanchnic nerves- arise from the T10-T11
Least splanchnic nerves- arise from T12
Upper lumbar splanchnic nerve- arise from L1-L2
In terms of abdominal viscera autonomic parasympathetic innervation, what nerve provides innervation to the proximal and middle GI tract?
Vagus nerve
In terms of the abdominal viscera autonomic parasympathetic innervation, what nerves supply innervation to the distal GI tract?
Pelvic splanchnic nerves (from S2-S4)
What two nerves sympathetically supply the pelvic viscera?
lumbar splanchnic nerves from the lower lumbar sympathetic ganglia, L3 and L4
Sacral splanchnic nerves from the sacral sympathetic ganglia
What nerves parasympathetically supply the pelvic viscera?
Pelvic splanchnic nerves S2-S4
What spinal regions sympathetically innervate the body wall, upper extremities, and lower extremities?
body wall:T1-L1
upper extremity- C2-C8
lower extremity- L3-Co