Fisiología sanguínea Flashcards

1
Q

Niveles de eritrocitos en hombres:

A

4.6-6.3 x10 ul

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2
Q

Niveles de eritrocitos en mujeres:

A

4.2-5.4 x10 uL

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3
Q

Nivel de hb normal en hombres:

A

13.5- 15.5 g/dL

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4
Q

Nivel de hb normal en mujeres:

A

12 - 14 g/dL

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5
Q

Niveles de Hto normales:

A

H: 47/ M: 41

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6
Q

Funciones principales de los eritrocitos:

A
  • Transporte de O2

- Regulación de pH

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7
Q

¿De qué se conforma un eritrocito?

A

4 moléculas de oxigeno unidas a un átomo de hierro

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8
Q

H responsable del 90% de síntesis de eritrocitos:

A

eritropoyetina (exogeno)

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9
Q

Fx que disminuyen oxigenación:

A
  1. Poco vol de sangre
  2. Anemia
  3. Baja hemoglobina
  4. Flujo de sangre pobre
  5. Problema pulmonar
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10
Q

La tasa de producción de eritrocitos es muy ___, requiere de vitamina ___ y ___para mantenerse normal.

A

elevada; B12 y folatos

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11
Q

Si hace falta vitamina B12 o B10 habrá una…

A

Anemia perniciosa (megaloblástica)

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12
Q

El proceso de eliminación de eritrocitos depende de:

A

La elasticidad del eritrocito

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13
Q

Vida de un eritrocito:

A

120 días después de crearse. Etapa final pierde elasticidad

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14
Q

Encargados de eliminar eritrocitos:

A

macrófagos

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