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PNS final > unit 7: sympathetic, sympathetic trunk > Flashcards

unit 7: sympathetic, sympathetic trunk Flashcards

1
Q

CB of preganglionic neurons are located in the LAT horn of cord levels __-__ or __ before exiting the cord in __ rootlets
-release ACH

A

T1-L2
3
anterior

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2
Q

preganglionic neurons follow the _ _ _ and exit that to enter the sympathetic trunk via the _ _ _ to synapse on postganglionic cells in ganglia of symp trunk

A

APR

white ramus communicans (WRC)

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3
Q

some preganglionic fibers pass THRU the symp trunk to be carried in ___ nerves to synapse in prevertebral plexus assoc w/ ___ viscera

A

splanchnic

abdominopelvic

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4
Q

the symp trunk is composed of two paravertebral columns of interconnected ganglia that carry ascending and descending fibers, and extends from the __ __ ganglion inferior to __ ___

A

superior cervical

ganglion impar

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5
Q 
usually are 21 or 22 ganglia in each trunk, usually:
\_\_ cervical
\_\_ thoracic
\_\_ lumbar
\_\_ sacral
A

3
11
4
4

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6
Q
  • symp trunk is located posterior to the __ __ (C) and anterior to the necks of the ribs (UT)
  • move more medially located inferiorly, on the __ aspect of the VB (LT & L)
  • trunks lie on anterior aspect of ___, and will join at level of coccyx
A

carotid sheath
lateral
sacrum

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7
Q

the ___ sympathetic trunk lies bt the carotid sheath & longus colli and capitis

A

cervical

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8
Q

the cervical symp trunk has no WRC, but a ___ goes to each cervical nerve

A

GRC

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9
Q

there are three cervical ganglia, sup, middle & inferior, which may fuse with first THORACIC ganglion to form the __ganglion

A

stellate

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10
Q

the largest cervical symp ganglion is the __, while the smallest is the __

A

superior

middle

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11
Q

the sup cervical ganglion (SCG) are formed by the union of the upper 4 cervical ganglia and is located at __-__ bt carotid sheath & __ __ muscle

A

C2-C3

longus capitis

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12
Q

the ___ fibers of the SCG are distrib in anterior, medial, or lateral branches

A

postganglionic

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13
Q

the LATERAL SCG branches are the GRC, and communicate w/ APR of __-__ and some cranial n (IX, X, XII)

A

C1-C4

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14
Q

MEDIAL SCG travel to the larynx, pharynx & heart

-heart branches are the __ __ nerves, which carry ___ info only

A

superior cardiac

efferent

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15
Q

ANTERIOR SCG branches follow the __ & __ carotid arteries, innerv vessels that supply blood to struct inside and outside the __

A

common
external
skull

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16
Q

the MIDDLE cervical ganglia (MCG) are located at the level of C6 & communicates with the APR of __ and __ nerves via the GRC

A

C5 & C6

17
Q

in the MCG, __ branches reach the thyroid & parathyroid glands, and are primarily __ in function

A

thyroid

vasomotor

18
Q

in the MCG the __ branches make up the middle cardiac nerves and contribute to the DEEP part of the __ __

A

cardiac

cardiac plexus

19
Q

the INFERIOR cervical ganglia (ICG) lies at the level of C7 TVP and neck of first rib, and communicates with the APR of __ & __ (sometimes T1 if fused) via GRC

A

C7 & C8

20
Q

cardiac branches of the ICG travel to heart as __ __ nerves, while others are sent to the __ artery to form plexuses around it and its branches (axillary and vertebral a)

A

inferior cardiac

subclavian

21
Q

all 12 ___ nerves have a GRC and WRC

A

thoracic

22
Q

in the SUP thorax, ganglia are ___ to rib heads, in lower thorax, ganglia are on the ___ aspects of VB

A

anterior

lateral

23
Q

branches from the __ __ thoracic ganglia travel medially carrying postganglionic fibers and visceral ___ to supply thoracic cavity struct

A

upper five

afferents

24
Q

three ___ nerves are associated with the lower 7 segments of the thoracic sympathetic trunk, carrying __ fibers & visceral afferent info to plexuses in the abdom & pelvic cavities

A

splanchnic

preganglionic

25
Q

the ___ splanchnic nerve is formed from 5th-9th ganglia and terminates in the CELIAC ganglion

A

greater

26
Q

the __ splanchnic nerve is formed from the 9th & 10th OR 10th & 11th ganglia and ends in AORTICORENAL ganglion

A

lesser

27
Q

the __ splanchnic nerve is formed by fibers from 12th ganglion and terminates in RENAL plexus

A

least

28
Q

LUMBAR symp trunks lie in the ___ space on the lateral aspects of the VB

A

retroperitoneal

29
Q

while all five lumbar nerves have a ___, only the first 2 and sometimes 3rd have a ___ that carries PREganglionic axons to the trunk

A

GRC

WRC

30
Q

2-4 lumbar splanchnic nerves carry ___ axons to the plexus surrounding the ___ aorta

A

PREganglionic

abdominal

31
Q

SACRAL symp trunks lie on __ aspect of sacrum, medial to anterior __ __

A

anterior

sacral foramina

32
Q

___ are assoc w/ each sacral nerve and the coccygeal nerve

A

GRC

33
Q

the 2 sacral symp trunks descend medially and meet to form the __ __ on the ANT surface of coccyx

A

ganglion impar

PNS final (12 decks)

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