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Sumario Anatomía del mesencefalo

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Anatomía descrita del mesencefalo con la fisiología

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ACUEDUCTO DE SILVIO DEFINICION DIVISION
Pedunculos cerebrales
Sistema ventricular; flujo del LCR, Cerebro medio, es la parte mas
ayuda a conectar el 3er ventriculo ventral y superior del tronco Lamina cuadrigemina
y el 4to ventriculo con el sistema encefalico, conecta el diencefalo (coliculos)
ventricular y ventriculos con el puente de varolio
superiores. Su ubicacion es dada por (protuberancia anular). Mide
2.5cm. Se encuentra a nivel de la Acueducto de Silvio
el Anus del acueducto y termina a
nivel de la entrada del 4to incisura de la tienda del cerebelo.
ventriculo. Esta rodeado por
sustancia gris periacueductal. PEDUNCULOS CEREBRALES
Tapizado internamente por celulas
ependimarias. Este conducto Unen al puente con los
permite la llegada de LCR al espacio
subaracnoideo de todo el SNC. hemisferios cerebrales,
Ayuda a mantener un ritmo y especificamente con el
presion adecuada del LCR, area subtalamica y de la
contribuyendo a la homeostasis y
proteccion del SNC. MESENCEFALO Capsula interna.
Parte anterior (pie
peduncular) parte
Fosa interpeduncular: limites
posterior (tegmento
quiasma optico, tractos opticos, origen del 3er par craneal mesencefalico ) esto
bordes mediales del pie peduncular forma el pedunculo.
y surco pontomesencefalico

LAMINA TECTAL O
COLICULOS INFERIORES CUADRIGEMNA COLICULOS SUPERIORES
Mas pequenos, mas mediales (menos Mas voluminosos, separados por
separacion entre ellos), a traves de Parte posterior del la glandula pineal. A traves de su
su brazo se conectan con el cuerpo mesencefalo. Compuesta brazo se conectan con el cuerpo
geniculado medial que se encarga de por 4 coliculos (2 geniculado lateral que se encarga
procesar informacion auditiva superiores y 2 de procesar informacion motora
Motora y refleja antes de que sea inferiores). y refleja optica antes que sea
interpretada por la corteza auditiva interpretada por la corteza
(reciben informacion del lemnisco visual (reciben informacion del
lateral) tracto optico)

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Written in
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