Gut Development: Peritoneum and Peritoneal Cavity (new) Flashcards

1
Q

What is the alimentary canal?

A

the tube that goes from the mouth to the anus that food passes through

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2
Q

What are the organs of the alimentary canal?

A

esophagus, stomach, duodenum, jejunum, ileum, appendix, cecum, ascending colon, transverse colon, descending colon, sigmoid colon, rectum

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3
Q

What are the accessory digestive organs?

A

spleen (lymphoid organ), liver, galbladder, pancreas

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4
Q

Where are all accessory digestive organs derived from?

A

foregut

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5
Q

What are the three segments of the gut tube?

A

foregut, midgut, hindgut

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6
Q

What alimentary organs are derived from the foregut?

A

esophagus, stomach, and first 1/2 of duodenum

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7
Q

What alimentary organs are derived from the midgut?

A

second 1/2 of duodenum, jejunum, ileum, cecum, appendix, ascending colon, and 2/3 of transverse colon

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8
Q

What alimentary organs are derived from the hindgut?

A

1/3 of transverse colon, descending colon, sigmoid colon, and rectum

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9
Q

Where is the foregut/midgut transition?

A

half way through the duodenum

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10
Q

Where is the midgut/hindgut transition?

A

2/3 way through transverse colon

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11
Q

What branch of aorta supplies the foregut derivatives?

A

celiac artery

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12
Q

What branch of aorta supplies the midgut derivatives?

A

superior mesenteric artery

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13
Q

What branch of the aorta supplies the hindgut derivatives?

A

inferior mesenteric artery

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14
Q

Where are the preganglionic cell bodies for the foregut located?

A

T5-T9

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15
Q

Where are the preganglionic cell bodies for midgut located?

A

T9-T12

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16
Q

Where are the preganglionic cell bodies for hindgut located?

A

T12-L2

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17
Q

What nerve supplies sympathetic innervation of the foregut?

A

greater splanchnic nerve

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18
Q

What nerve supplies sympathetic innervation of the midgut?

A

lesser/least splanchnic nerves

19
Q

What nerve supplies sympathetic innervation of the hindgut?

A

least/lumbar splanchnic nerves

20
Q

What prevertebral ganglion supplies the foregut? (sympathetic)

21
Q

What prevertebral ganglion supplies the midgut? (sympathetic)

A

superior mesenteric

22
Q

What prevertebral ganglion supplies the hingut? (sympathetic)

A

inferior mesenteric/intermesenteric

23
Q

What artery do postganglionic axons follow in foregut?

A

celiac artery

24
Q

What artery do postganglionic axons follow in midgut?

A

superior mesenteric artery

25
What nerve do postganglionic axons follow in hindgut?
inferior mesenteric artery
26
Where are preganglionic parasymp cell bodies for the foregut?
brainstem
27
Where are preganglionic parasym cell bodies for the midgut?
brainstem
28
Where are preganglionic cell bodies for the hindgut?
S2-S4
29
What nerve supplies the parasympathetic innervation for the foregut?
vagus nerve (CN X)
30
What nerve supplies the parasympathetic innervation for the midgut?
vagus nerve
31
What nerve supplies the parasympathetic innervation for the hindgut?
pelvic splanchnic nerve
32
What supply the somatic sensory innervation of the body wall?
intercostal nerves
33
Is the peritoneum pain sensitive?
the parietal peritoneum is
34
What layer of the peritoneum is on the body wall?
parietal peritoneum
35
What layer of the peritoneum is on the organs themselves?
visceral peritoneum
36
What is the mesentary?
the bridge between visceral and parietal peritoneum
37
Is the visceral peritoneum pain sensitive?
no it is pain insensitive
38
What are the two functions of the mesentary ?
1. suspend organs 2. conduit for nerves, blood vessels, and lymphatics
39
What does it mean if an organ is secondarily retroperitoneal?
start as mesenteric organs and then fall back onto the body wall and one of the layers of peritoneal disappears
40
What do all of the gut organs start as?
mesenteric
41
Is gut organs fall back and become retroperitoneal, what is that called?
secondarily retroperitoneal (has a mesentary and lost it)
42
What are primary retroperitoneal organs?
ones that are not in the digestive tract and never had a mesentary (kidneys, aorta, other things)
43
An mesenteric organ may also be refered to as
intraperitoneal
44
Name 2 entirely mesenteric organs:
Stomach; small intestine?