the rest of the nervous system

Question 1

sympathetic is made up of . . .

Answer 1

T1 to L2 spinal segments

Question 2

parasympathetic is made up of . . .

Answer 2

CN 3 - oculomotor
CN 7 - facial
CN 9 - glossopharyngeal
CN 10 - vagus

S2 - S4 spinal segments

Question 3

motor signal must travel across _____________ to get to the target organ

Answer 3

two neurons

Question 4

preganglionic neuron:

Answer 4

the first neuron, which has its soma in the brainstem or spinal cord

Question 5

postganglionic neuron:

Answer 5

the second neuron, whose axon extends the rest of the way to the target cell

Question 6

sympathetic branch of the visceral motor pathway . . .

Answer 6

paravertebral ganglia

Question 7

paravertebral ganglia is also called . . .

Answer 7

sympathetic chain ganglia or sympathetic trunk

Question 8

what is the paravertebral ganglia? and where is it located?

Answer 8

bilateral symmetrical chain of ganglia located just ventral and lateral to the spinal cord

** chain extended from the upper neck down to the coccyx

Question 9

preganglionic fibers leave from where???

Answer 9

thoracolumbar (T1-L2) spinal cord in anterior roots

Question 10

when preganglionic fibers leave where do they pass through?

Answer 10

pass through white ramus communicans into paravertebral ganglion

Question 11

describe the FIRST path of the preganglionic fibers:

Answer 11

course of sympathetic fibers that travel to the periphery in the same spinal nerves in which they travel out of the spinal cord

Question 12

postganglionic fibers go back to originating spinal nerve via . . .

Answer 12

gray ramus communicans

Question 13

describe the SECOND path of the preganglionic fibers:

Answer 13

preganglionic or postganglionic sympathetic fibers can ascend or descend trunk to other vertebral levels

Question 14

describe the THIRD path of the preganglionic fibers:

Answer 14

preganglionic fibers synapse with post ganglionic motor neurons in ganglia (may ascend in the trunk BEFORE synapsing)

Question 15

the third path is the innervation of . . .

Answer 15

thoracic and cervical viscera

Question 16

describe the FOUR path of the preganglionic fibers:

Answer 16

preganglionic sympathetic fibers pass through the sympathetic trunk and paravertebral ganglia WITHOUT synapsing

Question 17

the preganglionic fibers in splanchnic nerves are derived from . . .

Answer 17

T5 to L2

Question 18

the splanchnic nerves generally connect with sympathetic ganglia known as . . .

Answer 18

prevertebral ganglia

Question 19

what ganglion are part of the prevertebral plexus?

Answer 19

celiac ganglion
superior mesenteric ganglion
inferior mesenteric ganglion

Question 20

parasympathetic system leaves cranial and sacral regions of the CNS in association with:

Answer 20

cranial nerves:
3 – oculomotor
7 – facial
9 – glossopharyngeal
(3,7,9 = head & neck)
10 – vagus

spinal nerves:
S2 to S4

Question 21

the preganglionic parasympathetic motor fibers in CN 3, 7 and 9 synapse where??

Answer 21

in ganglia in the head and neck

Question 22

pelvic splanchnic nerves are what? and where do they originate from?

Answer 22

preganglionic parasympathetic fibers originating from anterior rami of S2-S4