respiratorio Flashcards

1
Q

Los bronquios y bronquiolos se ramifican ____ veces

A

23 a 25 generaciones (div. dicotómica)

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2
Q

estímulos de los bronquiolos

A

Adrenalina –> B2 - broncodilatación
NC X –> broncoconstricción

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3
Q

capas de la mucosa

A

sol(int.) y gel (ext.)

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4
Q

El pulmón está compuesto por alrededor de __ unidades funcionales separadas por tabiques fibrosos.

A

50,000

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5
Q

unidad funcional del pulmón es

A

lobulillo

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6
Q

un lobulillo está compuesto por

A
  1. bronquiolo terminal
  2. bronquiolo resp.
  3. saquitos alv.
  4. vena
  5. arteria
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7
Q

grosor paredes alveolares

A

<0.5 μm grosor

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8
Q

superficie intercambio gaseoso alvéolo

A

70 m2

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9
Q

histología alvéolos

A

Neumocitos I - barrera
Neumocitos II - surfactante
Células de polvo

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10
Q

composición del surfactante

A

fosfatidilcolina + proteínas

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11
Q

presión parcial de gases venosos

A

PO2= 40mmHg
PCO2=45 mmHg

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12
Q

presión parcial gases arteriales

A

PO2= 95 mmHg
PCO2= 40 mmHg

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13
Q

presión parcial gases ATM

A

O2= 159 mmHg
CO2= 0.3 mmHg

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14
Q

presión parcial gases ALV

A

O2= 104
CO2= 40

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15
Q
A
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