Autonomic Nervous System Flashcards
What type of information do the dorsal root ganglia deal with?
They receive afferent sensory information
What type of information passes through the ventral roots?
motor
What type of information passes through the dorsal primary ramus?
sensory (back skin), motor (erector spinae)
What type of information passes through the ventral rami?
Everything except deep back muscles
How many neurons are involved between neuron and target for GSA?
single neuron
Where does the cell body of a GSA nerve reside?
Dorsal root ganglia
Where do GSA’s terminate in the CNS?
Dorsal horn of the spinal cord gray matter
Where are GSE cell bodies located?
located in gray matter (ventral horn)
How many spinal nerves are involved in the GSE nerve circuit?
1
What are two divisions of the ANS?
sympathetic and parasympathetic
How many neurons are in a GVE circuit?
2 (preganglionic, postganglionic)
How do sympathetic and parasympathetic systems differ?
in anatomical circuits, origins, neurotransmitters, and receptors
Another name for sympathetic NS?
thoracolumbar
another name for parasympathetic NS?
craniosacral
What two types of fibers can be found in the DRG?
GSA and GVA
Where are preganglionic sympathetic cell bodies located?
intermdiolateral cell column, spinal cord gray matter, segments T1-L2
Where are postganglionic sympathetic cell bodies located?
Chain or collateral Motor Ganglia
Where does sympathetic motor information enter chain ganglia?
white ramus communicantes
Where does sympathetic motor information that exit chain ganglia?
gray ramus
What is the difference between chain ganglia between T1-L2 and those above and below?
no info. entering above and below so no white ramus
T or F all sympathetic innervation must pass through white rami?
T - doesn’t matter the region or if it meets a postganglionic fiber outside of the chain
What type of fibers are contained in splanchnic nerve?
Preganglionic autonomic fibers (symp or parasymp)
What region contains white rami?
T1-L2
Which is the only distribution pattern to use the gray rami communicantes?
Innervation to body wall of trunk, neck and limbs
What are the targets of innervation to the body wall of trunk, neck, and limbs?
- sweat glands
- vascular smooth muscle
- arrector pili muscle
T or F the head is the only region that does not receive sympathetic innervation through in which info. has passed through the chain ganglia?
T
Where are parasympathetic preganglionic cell bodies located?
Ventral gray horn of SC (S2-S4) and cranial nerves 3,7,9,10
Where are parasympathetic postganglionic cell bodies located?
terminal motor ganglia
T or F: parasympathetic innervation extends to the body wall?
F
From out to in, what layers are punctured to draw CSF?
skin, fat, supraspinous ligament, interspinous ligament, between or through the ligamenta flava, epidural fat and veins, dura, subdural space, and arachnoid
