Tissu osseux Flashcards

1
Q

os non lamellaire

A
  • au cours dev

- chez adulte cas de cicatrisation d’une fracture

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2
Q

os lamellaire

A
  • chez adulte

- apposition lamelle par ostéoblaste

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3
Q

Observation tissu calcifié macéré

A
  • pourrir
  • laver
  • couper à 100um
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4
Q

ostéon orientation

A

selon gd axe de la diaphyses de os long

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5
Q

ostéon diamètre

A

de 250 à 350um

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6
Q

lamelles par ostéon

A

4 à 15

chaque lamelle épaisseur de 3 à 7um

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7
Q

ligne cémentante riche en

A

glycoprotéines

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8
Q

canal de Volkmann

A

rempli de protéoglycanes et glycosaminoglycanes

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9
Q

renouvellement os haversien compact : enfant

A

toute la masse osseuse chaque année

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10
Q

renouvellement os haversien compact : adulte

A

10% masse osseuse chaque année

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11
Q

os trabéculaire, espaces entre travées

A

300um

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12
Q

os trabéculaire contenu

A
  • tissu conjonctif riche en réticuline
  • vaisseaux
  • filets nerveux
  • moelle hématopoïétique
  • adipocytes
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13
Q

ossification primaire type

A
  • intercatilagineuse = enchondrale

- interconjonctive = intrapériostique et de membrane

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