What fibers are in the MLF?
The medial longitudinal fasciculus is found in the brainstem and is a set of crossed fibers with ascending and descending fibers. The medial longitudinal fasciculus links the three main nerves which control eye movements, i.e. the oculomotor, trochlear and the abducent nerves, as well as the vestibulocochlear nerve.
Is medial longitudinal fasciculus extrapyramidal?
Medial longitudinal fasciculus are bundle of various fibers systems that enter and leave at different levels. Its fibers interconnect the motor nuclei of cranial nerves and also connect the vestibular apparatus with ocular muscles, neck muscles, and the extrapyramidal system.
Where is the MLF found?
The MLF are a group of fiber tracts located in the paramedian area of the midbrain and pons. They control horizontal eye movements by interconnecting oculomotor and abducens nuclei in the brain stem.
What is MLF neuro?
The medial longitudinal fasciculus (MLF) is a myelinated composite fiber tract found in the brainstem. The MLF primarily serves to coordinate the conjugate movement of the eyes and associated head and neck movements.
Where is the medial longitudinal bundle located?
The medial longitudinal fasciculus (MLF) is organized as a pair of white matter fiber tracts that extend through the brainstem and lie near the midline just ventral to the fourth ventricle (in the medulla and pons) and cerebral aqueduct (in the midbrain).
How many extrapyramidal tracts are there?
It is divided into two tracts; the medial (pontine) reticulospinal tract and the lateral (medullary) reticulospinal tract.
What is MLF in medicine?
Where is abducens nucleus?
rhombomere 5
The abducens nucleus is a motor nucleus situated in rhombomere 5. It supplies the lateral rectus muscle of the eye. The main part of the nucleus is located ventral to the genu of the facial nerve, immediately lateral to the medial longitudinal fasciculus (Fig. 16.5).
Where does the medial longitudinal fasciculus connect to?
The medial longitudinal fasciculus links the three main nerves which control eye movements, i.e. the oculomotor, trochlear and the abducent nerves, as well as the vestibulocochlear nerve.
Are There axons in the medial vestibularspinal tract?
Descending axons from the medial vestibular nuclei partially decussate and continue as the medial vestibulospinal tract at the level of the spinal cord. The dorsal trapezoid, posterior commissural and lateral lemniscal nuclei all contribute fibers, thereby linking both vestibular and cochlear nuclei of CN VIII to the MLF.
Where are the fibers in the MLF located?
The mlf contains fibers that run either to or from the cerebellum, vestibular nuclei, and superior colliculus, and is therefore well equipped to coordinate reflex eye movement in response to changes in head position, as well as purposeful movement to focus on an object of interest.