The digestive system 2 Flashcards

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1
Q

through what does chyme leaves stomach to small intestine

A

pyloric sphincter

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2
Q

function small intestine

A

digestion and absorption

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3
Q

length small instetsine

A

4,5 m

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4
Q

how is the small intestine seperated and fct

A

duodenum receives chyme, pancrratic digestive enzyme and bile from liver, jejunum-ileum

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5
Q

function of villi and microvilli (brush border)

A

produce enzymes for digestion and absorbtion

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6
Q

function large intestine

A

water reabsobtion, waste material accumulation

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7
Q

size large intestine

A

1,5 to 1,8 m

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8
Q

division of large intestine

A

cecum, colon (ascending, transverse, descending), rectum (includes anal canal)

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9
Q

liver

A

secretes bile pigments and salts, detoxifies

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10
Q

bile salts

A

prepare fat for enzymatic digetsion

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11
Q

where is bile stores

A

gallbladder

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12
Q

Pancreas type of gland and what it secretes

A

secretes pancreatic juice (trypsin, chemotrypsin, pancreatic amylase, lipase)

large exocrine and endocrine gland

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13
Q

whtàat type of enzymes are digestive enzymes and where do they operate

A

extracellular enzymes operation in lumen of digestive tract

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14
Q

carbohydrate digestion and enzymes

A
  • polysaccharides hydrolyzed to dissacharides by salivary amylase and pancreatic amylase
  • dissacharides hydrolyzed to monosaccharides by sucrase, lactase, maltase in brush border
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15
Q

protein digestion

A

proteases hydrolyze proteins to aa

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16
Q

proteases (for protein digetsion) example

A

pepsin, trypsin/chymotrypsin, peptidase

17
Q

lipid digestion

A
  • bile salts emulsify fats in lumen small intetsine

- lecithin emulsify fats by creating micelle combining with chylomicrons entering lymphatic system

18
Q

Nucleic acid digestion

A
  • pancreatic nucleases produces nucleotides

- nucleotidase in brush border breaks down into nitrogenous base, sugar, phosphate

19
Q

name all digetsive enzymes and location

A
Amylase (salivary glands)
pepsin (stomach)
Lipase (pancreas)
Trypsin (pancreas)
Chymotripsin (pancreas)
Peptidase (small intestine)
Nucleases (SI)
Lactase, maltase, sucrase (SI)
20
Q

compare vertebrate digestive tract

A

paper

21
Q

feuille summary digestion

A

paper