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biol112 lecture > digestive system overview & anatomy (week 8) pt. 1 > Flashcards

digestive system overview & anatomy (week 8) pt. 1 Flashcards

EXAM 3

1
Q

what are the main functions of the digestive system?

A

ingestion, breakdown of larger foodstuff, propulsion, absorption, defecation/elimination, taste (true)

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2
Q

list the GI tract organs

A
  • oral cavity
  • oropharynx
  • laryngopharynx
  • esophagus
  • stomach
  • small intestine
  • large intestine
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3
Q

what is the function of the oral cavity?

A

ingestion

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4
Q

what is the function of the oropharynx?

A

passageway for food

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5
Q

what is the function of the laryngopharynx?

A

passageway for food

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6
Q

what is the function of the esophagus?

A

passageway for food

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7
Q

what is the function of the esophageal glands?

A

secretes mucus to help lubricate the esophageal wall

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8
Q

what is the function of the cardia sphincter?

A

regulates food moving into stomach

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9
Q

what is the function of the stomach?

A

liquify bolus/foodstuff into chyme

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10
Q

what is the function of the pyloric sphincter?

A

regulates chyme moving into small intestine

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11
Q

what is the function of the small intestine?

A

starts & completes lipid digestion

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12
Q

what is the function of the large intestine?

A

water & electrolyte absorption

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13
Q

what is the pathway of food?

A
  1. mouth
  2. esophagus
  3. stomach
  4. small intestine
  5. large intestine
  6. rectum & anus
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14
Q

list the accessory organs

A
  • liver
  • gallbladder
  • pancreas (exocrine gland)
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15
Q

what is the function of the liver?

A

produces bile

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16
Q

what is the function of the gallbladder?

A

stores bile

17
Q

what is the function of the pancreas (exocrine gland)?

A

produces pancreatic juice

18
Q

what is the function of digestive enzymes?

A

breakdown molecules for absorption

19
Q

what is the function of alkaline fluid?

A

neutralizes acidic chyme from stomach

20
Q

what are the four layers of the GI tract organs?

A
  1. tunica mucosa
  2. submucosa
  3. muscularis external
  4. serosa
21
Q

what is the function of the tunica mucosa?

A

protective barrier against pathogens

22
Q

what is the function of the submucosa?

A

nutrient transport

23
Q

what is the function of the muscularis externa?

A

peristalsis

24
Q

what is the function of the serosa?

A

protection

25
Q

what epithelial tissue type does the oral cavity have?

A

stratified squamous epithelium

26
Q

what epithelial tissue type do the oropharynx, laryngopharynx, and esophagus?

A

stratifies squamous epithelium

27
Q

what epithelial tissue type does the stomach have?

A

simple columnar epithelium

28
Q

what epithelial tissue type do the small and large intestines have?

A

simple columnar epithelium

biol112 lecture (13 decks)

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