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GIGU > Blood and Nerves - Innervation of Viscera > Flashcards

Blood and Nerves - Innervation of Viscera Flashcards

1
Q

Blood supply to foregut

A

Coeliac trunk (branch of abdominal aorta)

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2
Q

Esophagus BS

A

Left gastric artery

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3
Q

Stomach BS

A 
Left/right gastric
Left/right gastroepiploic
Splenic artery
Posterior gastric artery
Short gastric artery
Gastroduodenal artery
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4
Q

Duodenum BS proximal to bile duct

A

Gastroduodenal artery

Pancreaticoduodenal arteries

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5
Q

Liver BS

A

Hepatic portal vein

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6
Q

Hepatic bile ducts BS

A

Proper hepatic artery

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7
Q

Gall bladder/cystic duct BS

A

Cystic artery

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8
Q

Pancreas BS

A

Gastroduodenal artery
Pancreaticoduodenal arteries
Splenic artery

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9
Q

Spleen BS

A

Splenic artery

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10
Q

Midgut BS

A

Superior mesenteric artery (branch of abdominal aorta)

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11
Q

Duodenum BS

A

Pancreaticoduodenal arteries from SM (superior mesenteric)

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12
Q

Jejunum BS

A

Intestinal arteries from SM

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13
Q

Ileum BS

A

Intestinal arteries from SM

Ileocolic artery from SM

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14
Q

Cecum BS

A

Ileocolic artery from SM

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15
Q

Appendix BS

A

Appendicular artery from SM

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16
Q

Ascending colon BS

A

Ileocolic artery from SM

Right colic artery from SM

17
Q

Transverse colon proximal 2/3, distal 1/3rd BS

A

Both supplied by middle colic artery from SM

18
Q

Hindgut BS

A

Inferior mesenteric artery (branch of abdominal aorta)
Internal iliac artery
Internal pudendal artery

19
Q

Descending colon BS

A

Left colic artery from IM

20
Q

Sigmoid colon BS

A

Sigmoidal arteries from IM

21
Q

Rectum proximal BS

A

Superior rectal artery from IM

22
Q

Rectum middle/distal BS

A

Middle- Middle rectal artery from Internal iliac

Distal- Inferior rectal artery from internal pudendal

23
Q

Anal canal BS

A

Inferior rectal artery from internal pudendal

24
Q

Parasympathetic contributions to abdominal viscera

A

CN III, VII, IX, X

S2-S4 pelvic splanchnic nerves

25
Q

Greater splanchnic nerves ganglion and targets

A

T5-T9
Synapse in coeliac ganglion in posterior mediastinum
Supplies esophagus, stomach, spleen, pancreas, liver, biliary system, duodenum and greater omentum

26
Q

Lesser splanchnic nerves ganglion and targets

A

T10-T11
Superior mesenteric ganglion in abdomen
Post ganglionics distributed with branches of the superior mesenteric artery
Jejunum, ileum, caecum, ascending/transverse colon

27
Q

Least splanchnic nerves ganglion and targets

A

T12
Aorticorenal ganglion in abdomen
Distributed with renal arteries to the kidney

28
Q

First and second lumbar splanchnic nerves

A

Terminate in intermesenteric plexus on anterior surface of abdominal aorta
PG fibers distributed w/branches of inferior mesenteric artery to descending colon, sigmoid colon and proximal rectum

29
Q

Third and fourth lumbar splanchnic nerves

A

Enter superior hypogastric plexus, on distal abdominal aorta

Post ganglionic fibers in hypogastric plexus are distributed to the ureter

30
Q

Pre ganglionic fibers in hypogastric plexus

A

Travel by way of the hypogastric nerves to the inferior hypogastric plexus on the anterior surface of sacrum
Post ganglionic fibers from this plexus are distributed w/branches of the internal iliac artery to the organs of the pelvic cavity and perineum

31
Q

Sacral splanchnic nerves

A

Preganglionic sympathetic nerves from S1-S5 terminate in the inferior hypogastric plexus
Postganglionic fibers from there are distributed via branches of the internal iliac artery to organs of the pelvic cavity and perineum

32
Q

Vagus nerve

A

Preganglionic fibers from dorsal motor nucleus terminate in the enteric plexus in walls of stomach, liver, pancreas, small intestine caecum, ascending and transverse colon
Post ganglionic fibers are distributed to smooth muscle/glands in the organs listed

33
Q

Pelvic splanchnic nerves

A

Preganglionic fibers originate in S2-S4 and synapse in the enteric plexus of descending colon, sigmoid colon, rectum, anal canal, urogenital organs and structures in the urogenital triangle of the perineum

34
Q

Enteric nervous system

A

Regulates most activity in the distal esophagus, stomach, intestines, pancreas and biliary system

35
Q

Myenteric plexus

A

Regulates motility, vasomotion of muscle layers and secretion of gastric glands

36
Q

Submucosal plexus

A

Prominent in small intestine
Involved in exocrine/endocrine secretion, vasomotion (blood flow to regulate water/electrolyte movement) and immune activity

37
Q

Sensory function

A

Within the ENS are sensory neurons which detect hunger, satiety, nausea and pain

GIGU (21 decks)

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