01 - GI anatomy Flashcards

1
Q
A
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2
Q
  1. what nerve innervates muscles of mastication?
A
  1. CN V (trigeminal)
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3
Q

swallowing involves what three CN?

A

9,10,12

(glossopharyngeal, vagus, and hypoglossal)

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4
Q

(stomach)

  1. relatively small in size
  2. pretty fast transit
  3. small amount of enzymatic and microbial digestion
A
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5
Q

(small intestine)

  1. primary site of enzymatic digestion
A
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6
Q

(small intestine)

(proteins)

  1. broken down by brush border enzymes
  2. individual AA and dipeptides are absorbed
  3. requires what as cotransporter?
A
  1. sodium
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7
Q

(SI)

(carb digestion)

  1. sucrase, lactase, maltase
  2. require Na as transporter
  3. what hydrolyzes starch into disaccarides and trisaccarides for absorption?
A
  1. pancreatic amylase
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8
Q

(SI)

(fat digestion)

  1. fats emulsified in SI - require pancreatic and biliary secretions
  2. pancreatic lipase + TGs ->
  3. bile salts are absorbed where to go back to liver?
A
  1. beta-monoglycerides and FFA (solubilized by bile salts and taken up into lymphatics)
  2. ileum
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9
Q

(SI)

(water)

A
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10
Q

(LI)

  1. cecum, large colon, transverse colon, small colon, and rectum
  2. primary digestive fxn is production of what?
A
  1. volatile fatty acids
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11
Q
A
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12
Q

(LI)

  1. primary digestive processes in cecum and colon are what?
  2. mostly what kind of bacteria?
  3. products similar to rumen - what are they?
  4. VFA absorbed from lumen provide what % energy req of adult horses?
A
  1. fermentative

(no specific digestive enzymes either secreted or bound to cells)

  1. anaerboes
  2. VFAs: acetic acid -> propionic acid -> butyric acid
  3. 75%
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13
Q

(nutrient absorption: LI)

  1. most absorption of VFAs occur where?
  2. VFA absorption dependent on what electrolyte?
A
  1. cecum and ventral colon
  2. Na
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14
Q
A
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15
Q
A
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