How is medial longitudinal fasciculus formed?
The medial longitudinal fasciculus (MLF) is one of a pair of crossed over tracts, on each side of the brainstem. These bundles of axons are situated near the midline of the brainstem and are made up of both ascending and descending fibers that arise from a number of sources and terminate in different areas.
Where is MLF located?
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. Such small infarcts can easily be overlooked by young neuroradiologists and trainees.
What structures are connected via the medial longitudinal fasciculus?
Medial longitudinal fasciculus is the main central connection for the oculomotor nerve, trochlear nerve, and abducens nerve.
What is medial longitudinal arch?
The medial longitudinal arch is formed by specific structures that allow the foot to function effectively. The medial arch is composed of the first three metatarsals, three cuneiforms, navicular, talus, and calcaneus bones of the foot. The peak of the medial arch is the superior articular surface of the talus.
What is dorsal longitudinal fasciculus?
The dorsal longitudinal fasciculus (fasciculus of Schutz) is a periaqueductal ascending and descending fiber system arising from the hypothalamus and terminating to the autonomic nuclei of the pons and the medulla, conveying autonomic fibers.
What is the inferior longitudinal fasciculus?
The inferior longitudinal fasciculus (ILF) is a white matter tract that connects the occipital and the temporal lobes. ILF abnormalities have been associated with deficits in visual processing and language comprehension in dementia patients, thus suggesting that its integrity is important for semantic processing.
Is the MLF in the medulla?
Their exact locations were as follows: the MLF was located close to midbrain midline and adjacent to CN III nuclei at the midbrain level; located on the posterior side of the pontocerebellar tract close to the ML in the pons; and located at the posterior side of ML at the medulla midline [1,25].
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.
What is longitudinal fasciculus?
The superior longitudinal fasciculus (SLF) is an association fiber tract in the brain that is composed of three separate components. It is present in both hemispheres and can be found lateral to the centrum semiovale and connects the frontal, occipital, parietal, and temporal lobes.
What supports the medial longitudinal arch?
These arches are shaped by the metatarsal and tarsal bones and braced by tendons and ligaments of the foot. Of the two longitudinal arches, the medial arch is the highest. The bones, ligamentous structures, and plantar fascia of the arch create an elastic and adaptive base that can support the entire body.
What is the tarsus bone?
The tarsal bones consist of seven short bones located at the proximal region of the foot. They are arranged in proximal and distal rows. 1. Calcaneus bone: The largest tarsal bone that projects posteriorly as the heel. The calcaneal tuberosity on the plantar surface can be felt under the skin.
