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GI > Autonomics and Lymphatics > Flashcards

Autonomics and Lymphatics Flashcards

1
Q

memorize lympatic drainage

A

do it now!

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2
Q

Thoracic duct? formation?

A

forms anterior to LV2 from a merging of left and right lumbar trunks
- enters thorax via the aorta hiatus at TV12

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3
Q

fn. of symp efferents?

A

vasoconstriction, contraction of sphincter muscles, inhibition of glandular secretions

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4
Q

fn. of PS efferents

A

vasodilation, increased peristalsis, relaxation of sphincter muscles

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5
Q

Aortic plexuses

A

contain ANS fibers (PS and symp) on the surface of aorta

  • plexuses contain:
    1. presynaptic PS (vagal) fibers
    2. Presynaptic Symp (Splanchnic) fibers
    3. Postsynaptic symp fibers
    4. Visceral affarent fibers
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6
Q

celiac plexus

A

viscera of foregut

receives fibers primarily from greater splanchnic

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7
Q

superior mesenteric plexus

A

viscera of midgut

receives fibers from greater, lesser and least splanchnic nn.

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8
Q

aorticorenal plexus

A

kidneys, suprarenals, ureters

receives primarily from lesser/least splanchnic nn.

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9
Q

inferior mesenteric plexus

A

viscera of hindgut

receives from lumbar splanchnic nn.

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10
Q

intermesenteric plexus

A

courses along aorta between SMA and IMA

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11
Q

superior hypogastric plexus

A

from IMA to bifurcation - gives rise to hypogastric nn

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12
Q

Vagus n.

A
  • provides PS innervation
  • preganglionic cell bodies located in brain stem
  • supplies to midgut and foregut
  • CN X
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13
Q

Pelvic Splanchnic nn.

A

S2,3,4

  • PS innervation
  • preganglionic cell bodies located in S2,3,4
  • supply hindgut
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14
Q

6 splanchnic nn?

A 
4 symp in abdomen (greater, lesser least, lumbar)
2 PS (vagus, pelvic splanchnics)
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15
Q

Sympathetic innervation to abdominal viscera?

A
  • preganglionic cell bodies of T5-L2
  • nerves enter symp. chain without synapsing
  • distribute via 4 plexuses
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16
Q

cord levels of symp. splanchnics?

A

greater: T5-9
Lesser: T10-11
Least: T12
Lumbar Splanchnic: T11-L2

17
Q

Greater splanchnic n.

A
  • Symp preganglionic bodies at T5-9
  • nerves synapse mostly in celiac ganglia
  • innervation of foregut
18
Q

Lesser Splanchnic n.

A
  • Symp preganglionic bodies at T10-11
  • synapse mostly at superior mesenteric ganglia and some aorticorenal
    innervate midgut as well as kidney
19
Q

Least splanchnic n.

A

symp preganglionic bodies at T12

  • synapse at SM ganglion and aorticorenal
  • supply midgut and kidney
20
Q

Lumbar Splanchnics

A

symp preganglionic bodies at mostly L1,2

  • synapse in inferior mesenteric ganglion
  • provide for hindgut
21
Q

Foregut, midgut, hinddgut? PS inneration

A

foregut: vagus n.
Midgut: Vagus n.
Hindgut: Pelvic Splanchnic n.

22
Q

Foregut region?

A

Foregut: T5-9 symp, greater splanchnic, celiac ganglion, vagus n. PS

23
Q

Midgut region?

A

Vagus n PS
T8-12 Symp: via greater, lesser, leas
superior mesenteric ganglion

24
Q

Hindgut region?

A

Pelvic splanchnic n.
L1-2 Symp: via lumbar splanchnic
inferior mesenteric ganglion

25
Q

distension? vs. pain?

A

pain travels with sympathetic nn. back to thoracic/upper lumbar spinal cord
- distension travels with PS nerves back to brainstem of sacral spinal cord

26
Q

Esophagus

A

Symp: T5-9 via greater splanchnic. celiac plexus. affarent acute pain felt substernally at T6

PS: vagus n.

27
Q

Stomach

A

Symp: T5-9 via greater splanchnic: celiac ganglia, acute pain felt T6-9

PS: vagus n.

28
Q

Small Intestine

A

Symp: T8-10 via greater and lesser splanchnic nn.
celiac and superior mesenteric ganglia
acute pain in T8-10

PS: via vagus nerve

29
Q

Cecum, Appendix, ascending colon, transverse colon

A

Symp: T10-12: lesser and least splanchnic: via superior mesenteric plexus
- acute pain from appendix referred to region of umbilicus

PS: via vagus n.

30
Q

Descending and sigmoid colon

A

Symp: L1-2: lumbar splanchnic nn. via inferior mesenteric plexus

PS: pelvic splanchnic nn. from S2-4

31
Q

Rectum and canal superior to pectinate line

A

Symp: L1-2 via lumbar and sacral splanchnic nn. via inferior mesenteric plexus

PS: pelvic splanchnic nn. from S2-4

32
Q

Anal canal inferior to pectinate line

A

innervatd by inferior rectal n. (somatic innervation)

33
Q

Spleen

A

Symp: T6-8 via greater splanchnic n. via celiac ganglia

PS: vagus n.

34
Q

Pancreas

A

Pancreas is primraily hormonally controlled; however does receive autonomic fibers which distribute via celiac plexus and superior mesenteric plexus

Pain referred to area above umbilical, and to mid back region, below scapula

Symp: T6-9 via greater splanchnic: via celiac trunk and superior mesenteric a.

PS: Vagus n.

35
Q

Pain due to problems with biliary release

A

RUQ and right shoulder

36
Q

Liver

A

Symp: T6-9 via greater splanchnic
cell bodies in celiac ganglia

PS: vagus

37
Q

Gallbladder and cystic duct

A

Symp: T5-9, greater splanchnic n. via celiac

PS: vagus n.

38
Q

Kidney

A

Symp: T10-L1: via lesser, least, and lumbar splanchnic n.
postganglionic cell bodies locate in aorticorenal and renal ganglia, via renal plexus

PS: vagus

39
Q

suprarenal gland

A

Symp: T8-L1: via greater, lesser, least, lumbar
Postganglionic bodies located in medulla of suprarenal gland
Efferent: vasomotor; liberate NE/Epi

PS: vagus n.

GI (12 decks)

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