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Anatomy > Intestines > Flashcards

Intestines Flashcards

1
Q

The small intestine is known as what type of organ?

A

intraperitoneal & secondary retroperitoneal

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2
Q

What are the 3 segments of the small intestine?

A
  1. duodenum= shortest
  2. jejunum
  3. ileum= longest
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3
Q

The small intestine is suspended in the abdominal cavity by what?

A

mesentery

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4
Q

What are the functions of the small intestine?

A
  • food digestion -> duodenum
  • nutrient absortion -> mostly jejunum
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5
Q

Where is the Pilcae circulares found in the small intestine?

A

in distal duodenum + jejunum + prox. ileum

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6
Q

Where is Peyer’s patches found in the small intestine?

A

only in distal ileum

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7
Q

What are the parts of the dupdenum?

A
  • sup. = 1st segment -> supplied by celiac trunk
  • descending = 2nd segment -> supplied by celiac trunk
  • horizontal = 3rd segment-> supplied by SMA
  • ascending = 4th segment -> supplied by SMA
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8
Q

What connects to the jejunum at the duodenojejunal junction?

A

ascending duodenum

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9
Q

What are the 2 parts of the descending duodenum?

A
  • major papilla= main pancreatic + common bile ducts
  • minor papilla= accessory pancreatic duct
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10
Q

What suspends the ascending duodenum?

A

ligament of Treitz

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11
Q

What are the 3 parts of the large intestine?

A
  • cecum
  • vermiform appendix
  • colon
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12
Q

What are the segments of the colon?

A
  • ascending = secondary retroperitoneal
  • transverse = has mesentery
  • descending = secondary retroperitoneal
  • sigmoid = has mesentery
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13
Q

What forms the haustra in the large intestine?

A

tenia coil

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14
Q

What is the arterial suply of the mid/hindgut?

A
  • abdominal aorta -> SMA -> midgut
  • abdominal aorta -> IMA -> hindgut
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15
Q

What are the lymphatics for the right side of body in the abdominal cavity?

A

right lymphatic trunk -> right subclavian vein

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16
Q

What are the lymphatics for the left side of body in the abdominal cavity?

A

chyle cistern -> thoracic duct -> left subclavian vein

17
Q

What is the sympathetic & parasympathetic innervation of the foregut & midgut?

A
  • para from vagus nerve
  • sympa from thoracic splanchnics
18
Q

What is the sympathetic & parasympathetic innervation of the hindgut?

A
  • sympa from lumbar splanchnics
  • para from pelvic splanchnics
19
Q

What is bariatric surgery of the small intestine?

A
  • connects upper stomach to jejunum
  • results in less food absorption
20
Q

What is Hirschsprung’s in the large intestine?

A
  • caused by neural crest cell defect
  • characterized by a lack of haustra -> no defecation

Anatomy (23 decks)

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