Upptag av näringsämnen Flashcards

1
Q

Åtta steg

A

Munhåla, svalg, matstrupe, magsäck, tolvfingertarm, tunntarm, tjocktarm, ändtarm

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2
Q

Munhåla

A

Mekanisk nedbrytning

Saliv med amylas och lipas

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3
Q

Amylas funktion

A

Nedbrytning av stärkelse

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4
Q

Lipas funktion

A

Nedbrytning av fett

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5
Q

Magsäck

A

Mekanisk nedbrytning, magsaft

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6
Q

Upptag i magsäck

A

Vatten, alkohol, vissa läkemedel

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7
Q

Magsaft

A

Saltsyra och enzymer

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8
Q

Magsaft enzym

A

Pepsin
Spjälkar proteiner
Kräver lågt pH

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9
Q

Intrinsic factor

A

Protein som krävs för upptag av B12 i tunntarmen

Produceras i magsäcken

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10
Q

Tolvfingertarmen

A

Bukspott och galla

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11
Q

Bukspott

A

Vätekarbonat, amylas, lipas, trypsin, kymotrypsin

0,5–2 liter/dygn

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12
Q

Galla

A

Gallsalter syntetiserade från kolesterol i levern, samlas upp i gallblåsan och utsöndras vid behov
Emulgerar fett
0,5–1 liter/dygn

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13
Q

Tunntarm

A

Enzymer i tarmcellernas utskott (villi) fortsätter spjälkning av näringsämnen
Upptag av näringsämnen, transport via portådern till levern
Fett transporteras via lymfan till blodet

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14
Q

Tjocktarm

A

Upptag av vatten och salter

Bakterier bryter ner fibrer (gasbildning)

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