GI Flashcards

1
Q

how much water is absorbed by the GI tract?

A

98%

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2
Q

How much water is lost through stool daily?

A

~200ml/day

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3
Q

Where in the small intestine does most water absorption take place?

A

Jejunum

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4
Q

How much water is absorbed in the small intestine?

A

~80%

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5
Q

How much water passes through the GI tract each day, on average? What percentages of different substances?

A

~9L/day

  • Food & drink: ~2L
  • Pancreatic secretions: ~0.8L
    ○ Saliva: ~1.5L
  • Intestinal secretions: ~2L
    ○ Gastric secretions: ~1.5L
  • Colonic mucous secretions: ~0.2L
    ○ Bile: ~0.8L
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