Les dejo estas dos fotos de la microanatomía de las arterias Cerebelosas
A, anterior view of the brainstem and
cerebellar arteries. B, posterior view of the cranial base with the cranial nerves
and arteries preserved. A and B, the SCA arises at the midbrain level and
encircles the brainstem near the pontomesencephalic
junction. The SCA courses below the oculomotor and
trochlear nerves and above the trigeminal nerve. The SCA loops down
closer to the trigeminal nerve in B than in A. The AICA arises at the pontine level and
courses by the abducens, facial, and vestibulocochlear nerves.
In A, both AICAs pass below the abducens nerves. In B, the
left abducens nerve passes in front of the
AICA and the right abducens nerve passes behind the AICA. The
PICAs arise from the vertebral artery at the medullary level and course
in relation to the glossopharyngeal, vagus, accessory, and
hypoglossal nerves. The origin of the SCAs are quite symmetrical from
side to side. There is slight asymmetry in the level of origin of the AICAs
and marked asymmetry in the level of the origin of the PICAs,
especially in A. A., artery; A.I.C.A., anteroinferior
cerebellar artery; Ant., anterior; CN, cranial nerve; P.C.A.,
posterior cerebral artery; P.I.C.A., posteroinferior cerebellar artery; S.C.A., superior
cerebellar artery; Sp., spinal; Vert., vertebral.
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