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ANAT 200 > GI SYSYEM I > Flashcards

GI SYSYEM I Flashcards

1
Q

what are 7 major functions of GI system

A
  1. ingestion
  2. mechanical processing
  3. compaction
  4. digestion
  5. secretion
  6. absorption
  7. excretion
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2
Q

what is mechanical processing

A

break down of food into smaller molecules

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3
Q

what is compaction

A

dehydration of undigested material and waste into feces

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4
Q

what is digestion

A

break down of macromolecules

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5
Q

what is responsible for digestion

A
  1. chemicals

2. enzymes

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6
Q

what is responsible for secretions

A

accessory organs

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7
Q

what do accessory organs secrete

A
  1. acids
  2. enzymes
  3. buffers
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8
Q

when does absorption occur

A

after digestion

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9
Q

what is absorption

A

movement of nutrients from tube to blood

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10
Q

what does nutrient rich blood pass through

A

liver

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11
Q

what happens to nutrient rich blood after passing through liver

A

passes through heart

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12
Q

what happens when nutrient rich blood passes through heart

A

nutrient rich blood becomes oxygenated

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13
Q

HISTOLOGY OF DIGESTIVE TRACT what are 4 basic layers all throughout the tube

A
  1. mucosal
  2. submucosal
  3. muscularis externis
  4. serosa
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14
Q

HISTOLOGY OF DIGESTIVE TRACT what is function of serosa layer

A

produce watery fluid for lubrication

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15
Q

HISTOLOGY OF DIGESTIVE TRACT what is histology of glandular tissue / acessory organs

A

epithelium

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16
Q

HISTOLOGY OF DIGESTIVE TRACT where do secretions of exocrine glands go

A

tube

17
Q

HISTOLOGY OF DIGESTIVE TRACT where do secretions of endocrine glands go

A
  • circulation

- surrounding CT

18
Q

MUCOSA what is mucosal layer made of

A

epithelium

19
Q

MUCOSA why is mucosa made of epithelium

A

lumen

20
Q

MUCOSA what is purpose of having stratified squamous epithelium at beginning and end of tube

A

associated w outside world

21
Q

MUCOSA what kind of epithelium are in parts of tube within abdomen

A

simple squamous epithelium

22
Q

MUCOSA what is purpose of simple squamous epithelium in abdomen

A

absorption

23
Q

MUCOSA what does epithelium always require

A

source of vasculature

24
Q

MUCOSA what is source of vasculature for epithelium

A

lamina propina (CT)

25
Q

MUCOSA what are glands of mucosa layer filled w

A

mucous

26
Q

MUCOSA what is function of mucous

A

lubrication

27
Q

SUBMUCOSA what is submucosa

A

CT

28
Q

SUBMUCOSA what is function of submucosa

A

act as passageway for

  1. vasculature
  2. nerves
  3. lymphatics
29
Q

SUBMUCOSA what is present in submucosal layer (3)

A
  1. immune cells
  2. exocrine glands
  3. specialized plexus
30
Q

SUBMUCOSA what is function of specialized plexus

A
  • innervate mucosal layer

- innervate submucosal layer

ANAT 200 (9 decks)

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