Tissu sanguin Flashcards

1
Q

Plaquette : nombre

A

150 à 350 gigas/L

= 10 à 20 fois moins nombreuses de hematies

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2
Q

Plaquette : diametre

A

2-3um

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3
Q

Plaquette : disque

A

biconvexe

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4
Q

Plaquette : granulomere central = granules alpha

A
  • facteur plaquettaire 4
  • Thrombospondine
  • Facteur de Von Willebrand
  • Facteur de croissance dérivé des plaquettes
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5
Q

Plaquette : granulomere central = granules sigma

A

sérotonine

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6
Q

Plaquette : granulomere central = granule dense

A
  • ATP
  • ADP
  • calcium
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7
Q

Plaquette : hyalomere

A
  • faisceau marginal de microtubule
  • cortex actine
  • canalicules
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8
Q

activation plaquettaire

A

passage forme discocyte à échinocyte

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9
Q

Abondance polynucléaire neutrophile

A

40 a 75%

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10
Q

Abondance polynucléaire éosinophile

A

1 à 5%

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11
Q

Abondance polynucléaire basophile

A

0 à 0,5%

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12
Q

Abondance mononucléaire lymphocytes

A

20 à 50%

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13
Q

Abondance mononucléaire monocytes

A

3 à 7%

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14
Q

Polynucléaire neutrophile : pool circulant

A

8h max

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15
Q

Polynucléaire neutrophile : pool marginé

A

12 à 24h

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16
Q

Polynucléaire neutrophile : pool tissulaire

A

quelques jours