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Exam 4 Anatomy > Ab Cavity 2 > Flashcards

Ab Cavity 2 Flashcards

1
Q

Superior duodenum

A

1st part

intraperitoneal

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2
Q

descending dueodenum

A

2nd part

secondarily retroperitoneal

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3
Q

horizontal duodenum

A

3rd part

secondarily retroperitoneal

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4
Q

ascending duodenum

A

4th part

secondarily retroperitoneal

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5
Q

terminal slip

duodenum

A

5th part

intraperitoneal

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6
Q

large intestine

CECUM

A

→ Blind intestinal pouch
→ Vermiform appendix at lower pole
→ Intraperitoneal

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7
Q

large intestine

ASCENDING COLON

A

→ Found between cecum and right colic flexure
→ Forms right paracolic gutter
→ Secondarily retroperitoneal

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8
Q

large intestine

TRANSVERSE COLON

A

→ Found between right and left colic flexures
→ Fuses with greater omentum
→ Intraperitoneal
→ Duodenum to left colic flexure is embryonic midgut
→ Beyond left colic flexure is embryonic hindgut

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9
Q

large intestine

DESCENDING COLON

A

→ Forms left paracolic gutter

→ Secondarily retroperitoneal

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10
Q

large intestine

SIGMOID COLON

A

→ S-shaped free portion of the large intestine
→ Intraperitoneal
→ Ends at rectosigmoid junction (end of taenia coli also)

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11
Q

Rectum

A

→ Pelvic, fixed portion of large intestine

→ Primarily retroperitoneal

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12
Q

Anus

A

primarily retroperitoneal

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13
Q

left gastric artery

A

Off the celiac trunk

goes to the proximal portion of the lesser curvature of the stomach

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14
Q

splenic artery

A

off celiac trunk

artery passes behind the stomach and pancreas and serves the spleen, branches include:
→ Pancreatic arteries go to the neck, body and tail of pancreas
→ Short gastric arteries go to the stomach (closest to the spleen)
→ Left gastro-omental artery (also called gastroepiploic) goes to the left side of the greater curvature of the stomach

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15
Q

common hepatic artery

A

off celiac trunk

the major branch going towards the liver, its branches include:
→ Gastroduodenal artery
→ Right gastric artery
→ Proper hepatic artery

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16
Q

gastroduodenal artery

A

off common hepatic a

 Right gastro-omental (gastroepiploic) artery goes to the right side of the greater curvature of the stomach
 Superior pancreaticoduodenal artery goes to the stomach, pancreas and the head of the duodenum
 Supraduodenal artery goes to the superior duodenum, it is sometimes absent

17
Q

right gastric artery

A

off common hepatic a

goes to the right lesser curvature of the stomach

18
Q

proper hepatic artery

A

off common hepatic a

(some books say that the R. gastric a. is a branch of the proper hepatic while others consider only arteries going to the liver to be branches of the proper hepatic). Its branches include:
 Right hepatic artery which gives off the Cystic artery to the gall bladder and goes to the liver
 Left hepatic artery to the liver

19
Q

Oxygenation of midgut

A

via superior mesenteric artery SMA

20
Q

inferior pancreaticduodenal a

A

off superior mesenteric a

which goes to the head of the pancreas and the duodenum

21
Q

intestinal branches

A

off SMA

go to the jejunum and ileum

22
Q

ileocolic artery

A

off SMA

goes to the distal ileum and the cecum

23
Q

Right colic artery

A

off SMA

goes to the ascending colon

24
Q

middle colic artery

A

off SMA

goes to the transverse colon

25
Q

marginal artery

A

off SMA

this artery is an anastomotic artery that circles the colon; formed by the branches of the ileocolic, right colic, middle colic, and left colic (off IMA, see below) arteries. The marginal artery gives rise to the vasae rectae (straight vessels).

26
Q

hindgut oxygenated by

A

inferior mesenteric artery

branches:
• Left colic artery goes to the descending colon
• Sigmoid artery goes to the sigmoid colon
• Superior rectal arteries go to the proximal rectum

27
Q

Foregut innervation
Celiac plexus
Sympathetics

A
  • Arise from T5-T9 spinal nerve levels
  • Presynaptics pass through sympathetic chain
  • Pass through the greater splanchnic nerve
  • Synapse in the celiac ganglia
  • Postsynaptics follow branches of celiac trunk to target organs
28
Q

Foregut innervation
celiac plexus
Parasympathetics

A
  • Arise from the brain
  • Pass through Vagus nerve (X)
  • Pass through celiac plexus (without synapsing)
  • Follow branches of celiac trunk to targets
  • Synapse in ganglia in the gut plexuses
  • Postsynaptics reach targets via short postsynaptic fibers
29
Q

midgut innervation
superior mesenteric plexus
sympathetics

A
  • Arise from T10-T12 spinal nerve levels
  • Presynaptics pass through sympathetic trunk
  • Pass through the lesser splanchnic nerve (T10-11) or least splanchnic (T12)
  • Synapse in the superior mesenteric ganglion
  • Postsynaptics follow branches of SMA to target organs
30
Q

midgut innervation
superior mesenteric plexus
parasympathetics

A
  • Arise from the brain
  • Pass through Vagus nerve (X)
  • Pass through superior mesenteric plexus (without synapsing)
  • Follow branches of SMA to targets
  • Synapse in ganglia in the gut plexuses
  • Postsynaptics reach targets via short postsynaptic fibers
31
Q

hindgut innervation
inferior mesenteric and hypogastric plexus
SYMPATHETICS

A
  • Arise from L1-L2 spinal nerve levels
  • Presynaptics pass through sympathetic trunk
  • Pass through lumbar splanchnic nerves (L1-L2)
  • Synapse in the inferior mesenteric ganglion
  • Postsynaptics follow branches of IMA to target organs
32
Q

hindgut innervation
inferior mesenteric and hypogastric plexus
PARASYMPATHETICS

A
  • Arise from S2-S4 spinal nerve levels
  • Pass through sacral spinal nerves (S2-S4)
  • Pass through pelvic splanchnic nerves (additional step)
  • Branches to the colon pass cranially through hypogastric plexus and inferior mesenteric plexus
  • Follow branches of IMA to targets
  • Synapse in ganglia in the gut plexuses
  • Postsynaptics reach targets via short postsynaptic fibers

Exam 4 Anatomy (8 decks)

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