Term
| What are the organs derived from the midgut? |
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Definition
| horizontal duodenum, ascending duodenum, jejunum, ilium ascending colon, first 2/3 of transverse colon, appendix, and cecum |
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Term
| What arteries supply the organs derived from the midgut? |
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Definition
| Superior mesenteric arteries |
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Term
| what is the venous drainage of organs formed from the midgut? |
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Definition
| Superior mesenteric veins |
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Term
| what is the lymph system for the organs derived from the midgut? |
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Definition
| superior mesenteric lymph nodes |
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Term
| what organs are derived from the hindgut? |
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Definition
| distal 1/3 of the transverse colon, descending colon, sigmoidal colon, rectum |
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Term
| what is the blood supply to the organs derived from the hind gut? |
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Definition
| Inferior mesenteric arteries |
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Term
| what is the venous drainage from the organs derived from the hind gut? |
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Definition
| inferior mesenteric veins |
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Term
| what is the lymph system for the organs derived from the hind gut? |
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Definition
| inferior mesenteric lymph nodes |
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Term
| What is the blood supply to the descending duodenum? |
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Definition
| celiac arteries- is it derives from the foregut |
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Term
| what is the blood supply to the horizontal duodenum? |
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Definition
| superior mesenteric arteries, which originate just superior to it |
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Term
| where do the superior mesenteric vessels emerge? |
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Definition
| superior to the horizontal duodenum, at L1, behind pancreas |
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Term
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Definition
purple is ascenting duodenum
arrow at duodenojejunal junction, a where small intestin flexes to go from secondarily retroperitoneal to intraperitoneal as the jejunum |
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Term
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Definition
| suspensory muscle of the duodenum, thethers duodenojeunal flexure to the diaphragm |
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Term
| in what quandrant(s) are the jejunum and ileum? |
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Definition
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Term
| what are the differences between the jejunum and ileum? 3 |
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Definition
- jejunum has many plicae circulares ileum only a few
- ileum has lymphoid nedules
- jejunum has fewer arcades and long straight arteries while ileum has more arcades and short straight arteries
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Term
| what is the transition point from small intesting to large and in what quadrant(s) does it lie? |
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Definition
| ileocecal junction in lower right quadrant |
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Term
| what is the ileal diverticulum? |
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Definition
| remnant of yolk stalk between ileum and umbilicus can present like apendicitis |
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Term
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Definition
green- teniae coli- longitudinal band of smooth muscle
blue- haustra-pouches
white- omental apendicies- fat attached
yellow- ileocecal valve |
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Term
| where is the appendix attached? |
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Definition
to the base of the cecum
mesoapendix attaches it to mesenteries |
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Term
| superficially how can you locate where the appendix should be? |
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Definition
| McBurney's point 1/3 of the way between ASIS and umbilicus is the normal location for the appendix |
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Term
| in what quadrant(s) is the ascending colon? |
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Definition
| right lower and right upper |
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Term
| what is lateral to the ascending colon?> |
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Definition
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Term
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Definition
green- right colic (hepatic) flexure
yellow- left colic (splenic) flexure |
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Term
| what attaches the transverse colon to the body wall? |
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Definition
| transverse mesocolon- it is intraperitoneal |
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Term
| in what quadrant(s) is the descending colon? |
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Definition
| left upper and left lower |
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Term
| what is lateral to the descending colon? |
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Definition
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Term
| what is the medical relevance of the paracolic gutters? |
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Definition
| connected to the intrperitoneal cavity and thus allow infection to spead quickly through the abdominal cavity |
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Term
| what part of the colon is in the left lower quadrant? |
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Definition
| part of the descending colon and the sigmoidal colon |
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Term
| where does the SMA branch from the abdominal aorta? |
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Definition
| L1, behind pancreas and crosses horizontal part of duodenum |
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Term
| describe the arterial blood flow to the horizontal duodenum |
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Definition
| anterior and posterior inferior pancraticduodenal arteries of the SMA anastomose with the A&P superior pancreaticdudoenal arteries of the celiac |
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Term
| where do the SMA and IMA anastomose? |
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Definition
| in the marginal artery which parallels the colon, tributaries are the colic arteries |
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Term
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Definition
| colic arteries from SMA and IMA anastomose to make marginal artery in green |
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Term
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Definition
green- middle colic
blue- right colic
yellow- ileocolic
purple- apendicular |
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Term
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Definition
green- left colic
blue-sigmoid- up to 4 branches
yellow- superior rectal |
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Term
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Definition
pink- portal vein
blue- superior mesenteric vein
yellowe- splenic vein
green- Inferior mesenteric vein |
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Term
| where does lymph from the ileum drain? |
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Definition
| to superior mesenteric lymph nodes the to the chyle cistern |
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Term
| where does lymph from the descending colong drain to? |
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Definition
| to inferior mesenteric lymph nodes then to superior mesenteric or aortic lymph nodes |
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Term
| map the route of parasympathetic innervation of the jejunum |
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Definition
preganglionic cell bodies in brain
preganglionic cell fibers- vagus nerve
post ganglionic cell bodies and fiber in walls of organ |
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Term
| map the route of parasympathtic innervation of the sigmoidal colon |
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Definition
preganglionic cell bodies S2-S4
preganglionic fiber- pelvic splanchnic nerve
post ganglionic bodies an fibers- wall of organ |
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Term
| map route of sympathetic innervation of the rectum |
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Definition
preganglionic cell bodies lateral horn of lumbar spin
preganglionic fiber- ventral root- spinal nerve-white ramus comunicans- sympathetic trunk-lumbar spanchnic nerve
postganglionic cell bodies- inferior mesenteric gangleion
postganglionic fibers- follow arterial branches to organ |
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Term
| map rout of sympathetic innervation to appendix |
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Definition
preganglionic cell bodies: lateral horn of thoracic spinal cord
preganglionic fiber: ventral root- spinal nervel- white ramus comunicans- sympathetic trunk- thoracic splanchnic nerves
postganglion bodies: celiac or SM ganglia
postganglionic fibers: follow arterial branches to organ |
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Term
| how is pain felt in the abdomen |
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Definition
| follows sympathetic pathway back to spinal cord |
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Term
| how is appendicitis felt at very beginning? |
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Definition
diffuse pain at umbilicus from T10 dermatome
as parietal peritoneum becomes involves somatic innervation localizes pain |
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