Flashcards in Study Guide Questions- Exam 4 Deck (237)
What are the generic parts of a spinal nerve?
ventral and dorsal nerve rootlets, ventral and dorsal nerve roots, dorsal nerve root ganglion, mixed spinal nerve, and ventral and dorsal primary nerve rami or divisions
What specific types of nerve fibers may be associated with spinal nerves?
a) somatic efferent fibers b) preganglionic visceral, involuntary or autonomic efferent fibers c) postganglionic visceral, involuntary or autonomic efferent fibers
What parts of the peripheral nerve system will contain peripheral sensory processes?
mixed spinal nerve, ventral primary ramus/division, dorsal primary ramus/division
What parts of the peripheral nerve system will contain central sensory processes?
dorsal nerve root and dorsal nerve rootlets
What are the ultimate target cells of the somatic efferent pathways?
What are the ultimate target cells of the visceral efferent pathways?
smooth muscle, cardiac muscle, glandular tissue, and some unique specialized cell types
What cord levels will contain somatic efferent neurons?
cord levels C1 - Co1
What skeletal muscles are specifically innervated via dorsal primary rami/division?
splenius, erector spinae, transversospinalis, suboccipital, interspinalis, intertransversarii, & levator costarum
What skeletal muscle is innervated via both ventral primary rami/divisions and dorsal primary rami/divisions?
Skeletal muscle located on the dorsal side of the extremities will be innervated by which spinal ramus or division branches?
ventral primary ramus/division branches
What are the subdivisions of the visceral division of the peripheral nerve system?
sympathetic, parasympathetic and enteric
What is the location for the enteric nerve system?
along the gastrointestinal tract and organ system
What is the location of the myenteric plexus of Auerbach?
between the longitudinal and circular muscle layers along the entire gut
What function is primarily emphasized for the myenteric plexus of Auerbach?
peristaltic activity along the gastrointestinal tract
What is the location of the submucosal plexus of Meissner?
between the circular muscle layer and the muscularis mucosa layer of the gut
Which enteric plexus lies between the circular muscle layer and the muscularis mucosa layer of the gut?
submucosal plexus of Meissner
What function is primarily emphasized for the submucosal plexus of Meissner?
influence on the process of secretion/absorption of the gut
What locations of the gastrointestinal tract are most influenced by parasympathetics?
the most proximal and distal parts of the gastrointestinal tract
The superior cervical ganglion is the result of fusion of which paravertebral ganglia?
C1-C4 paravertebral ganglia
The middle cervical ganglion is the result of fusion of which paravertebral ganglia?
C5, C6 paravertebral ganglia
The inferior cervical ganglion is the result of fusion of which paravertebral ganglia?
C7-C8 paravertebral ganglia
The stellate ganglion is the result of fusion of which paravertebral ganglia?
C7, C8, T1 paravertebral ganglia
The stellate ganglion will communicate with which spinal nerves?
ventral primary rami of C7, C8 and T1 spinal nerves
Which sympathetic ganglia are located in front of the vertebral body?
prevertebral sympathetic ganglia
What are the names of the most consistent prevertebral ganglia?
celiac ganglion, superior mesenteric ganglion, and inferior mesenteric ganglion
Which of the prevertebral nerve plexuses are more likely to contain secondary sympathetic neurons cell bodies?
cardiac plexus, pulmonary plexus, celiac plexus, and inferior hypogastric (pelvic) plexus
How are the remaining nerve plexuses named?
according to the name of the blood vessel they accompany
Based on the target cell innervated, what are the classifications given to postganglionic sympathetic efferent fibers?
vasomotor fiber, pilomotor fiber, sudomotor fiber, and secretomotor fiber
What is the target of postganglionic sympathetic pilomotor fibers?
smooth muscle of hair follicles; the erector pili muscle