atlas y axis
TRANSCRIPT
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Articulación de Columna con cabeza
Gpo. 1267
• Degollado García Javier
• Delmotte Prieto Sergio
• Godínez Morado Isaac
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Atlas y Axis
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A. Atloidoaxoidea
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Medios de Unión• L. laterales • L. Anterior• L. Posterior
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A. Atloidoodontoidea
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Medios de Unión
• Ligamentos Occipitoaxoideos (medial y laterales).
• Ligamento Cruciforme (transverso+prolongaciones).
• Ligamentos Alares u occipito odontoideos laterales.
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Medios de Unión
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Articulación occipitoatloidea
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Tipo
• Diartrosis• Al género de las
condíleas• Sinovial
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Superficies articulares
• Cóndilos del occipital • Cavidades glenoideas del atlas– Ambas cubiertas por cartílago hialino.
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Medios de unión
• Cápsula articular• Ligamento occipitoatloideo anterior• Ligamento occipitoatloideo posterior
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Sinovial
• Muy débil, tiene prolongaciones internas que se introducen entre la apófisis odontoides y el ligamento transverso.
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Relaciones• Por fuera: El recto lateral de la cabeza
• Por dentro: Ligamentos occipito odontoideos laterales
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Movimientos
• Flexión: Rectos anteriores, mayor y menor y recto lateral de la cabeza.
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Movimientos
• Extensión: Trapecio, esplenio, complexo mayor, rectos mayor y menor posteriores y oblicuo menor de la cabeza.
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Movimientos
• Flexión lateral: Trapecio, esplenio, complexo menor, recto lateral, oblicuo menor de la cabeza y esternocleidomastoideo.
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UNIÓN OCCIPITOAXOIDEA
• Indirecta.• Lig. Occipitoaxoideos• Lig. Occipitoodontoideos.
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LIG. OCCIPITOAXOIDEOS
• Medio:• Laterales:• Arnold:
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LIG. OCCIPITOODONTOIDEOS
• Medio:• Laterales:
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