Embedded Files
Assoc. w/ CN:
Abducens n. (CN6)
Location:
Caudal pons beneath the facial colliculus in the floor of 4th.
Short distance from the median plane and in line w/ nuclei of CN3 & CN4 above, and hypoglossal nerve below.
MLF is closely related to its ventromedial aspect.
Fibers course
Fiber pass ventrally downwards through the reticular formation intersecting the trapezoid body and medial lemniscus and traversing the basilar part of pons to emerge at the junction of pons and pyramid of medulla.
The cells in the reticular formation adjacent to the abducent nucleus constitute a “para-abducent nucleus” which functions as a “centre for lateral gaze.”
These cells send fibres to the ipsilateral abducent nucleus and through the MLF, to those cells of contralateral oculomotor nucleus ⇒ medial rectus muscle.
Target: Lateral rectus
Page updated
Google Sites
Report abuse