Term
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Definition
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Term
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Definition
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Term
| What is the route of The Mesentery? |
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Definition
Duodenojejunal junction to ileocecal junction
- obliquely, inferiorly, and to the right |
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Term
| Vessels pass through what to enter The Mesentery? |
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Definition
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Term
| Describe The Mesentery at the jejunum: |
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Definition
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Term
| Describe The Mesentery at the ileum: |
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Definition
1) fatty & opaque
- more fat absorption here |
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Term
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Definition
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Term
| Plicae circulares are what? |
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Definition
1) Folds of the mucosa & submucosa
2) more numerous & packed in jejunum
3) wall of jejunum is thicker |
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Term
| What is Meckel's Diverticulum? |
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Definition
1) outcropping of ileum
2) antimesenteric side
3) remnant of embryonic yolk stalk
- 1-2% of pop.
- more freq. in males
- 1 m prior to ileocecal junction
4) composed of:
- gastric & pancreatic tissue
- yolk stalk contains undifferentiated tissue |
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Term
| What are some complications of Meckel's Diverticulum? |
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Definition
1) peptic ulcers
2) tumors
3) inflammation
4) if attached to ant. abd. wall:
- decreases motility of SI
- SI can become wrapped around or entangled
- volvulus |
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Term
| Innervation of Jejunum & Ileum |
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Definition
1) Symp
- inhibit peristalsis & secretion
- initiates vasoconstriction
- Pre-ganglionic
- synapse on celiac, sup. mes., inf. mes. ganglia
- sacral splanchnics
- originate in thoracic cord
- pass through paravertebral ganglia
- synapse in inf. hypogastric plexus
2) Para
- increases peristalsis & secretion
- cranial (vagus)
- intertwine in upper aortic
- Pre-ganglionic
- supplies everything sup. mes. artery supplies
plexus (none in lower aortic plexus)
- sacral (Pre-ganglionic)
- pelvic splanchnics
- pass through pelvic plexus
- supply hindgut |
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Term
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Definition
1) aortic plexus
2) pre-ganglionic |
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Term
| Greater & lesser splanchincs |
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Definition
1) Pre-ganglionic
2) synapse at celiac & aorticorenal ganglia
3) travel down to upper aortic plexus as Post-ganglionic |
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Term
| What type of fibers does aortic plexus contain? |
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Definition
1) Pre & post ganglionic symp
2) Pre-ganglionic para
3) afferent |
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