Ad
related to: mammillotegmental fasciculus diagram ppt anatomy download pdf drawing model
Search results
Results From The WOW.Com Content Network
The mammillotegmental fasciculus (mammillotegmental tract, or mammillotegmental bundle of Gudden) is a small bundle of efferent fibers from the hypothalamus running from the mammillary body to the tegmentum. [1]
Axons divide within the gray matter; the thicker fibres form the MTT while the finer branches descend as the mammillotegmental fasciculus. [3] The MTT spreads fan-like as it terminates in the medial dorsal nucleus. [3] The axons from these nuclei form part of the thalamocortical radiations. [6]
Damage to the mammillary bodies due to thiamine deficiency is implied in pathogenesis of Wernicke–Korsakoff syndrome.Symptoms include impaired memory, also called anterograde amnesia, suggesting that the mammillary bodies may be important for memory.
The lenticular fasciculus is composed of fibers that pass from the internal part of the globus pallidus, through the posterior limb of the internal capsule, around the zona incerta. These fibers connect with the fibers of the ansa lenticularis in the field H of Forel to form the thalamic fasciculus.
It is located anterior and lateral to the medial longitudinal fasciculus. [citation needed] It is continuous caudally with the nucleus prepositus hypoglossi. [4] The PPRF (and adjacent regions of the pons) are traversed by fibers projecting to the abducens nucleus that mediate smooth pursuit, vestibular reflexes, and gaze holding. [5]: 498
In neuroanatomy, the optic radiation (also known as the geniculocalcarine tract, the geniculostriate pathway, and posterior thalamic radiation) are axons from the neurons in the lateral geniculate nucleus to the primary visual cortex.
The two nuclei receive the impulse from the two ascending tracts: fasciculus gracilis and fasciculus cuneatus. After the two tracts terminate upon these nuclei, the heavily myelinated fibres arise and ascend anteromedially around the periaqueductal gray as internal arcuate fibres. These fibres decussate (cross) to the contralateral (opposite ...
Ascending fibers are second-order axons projecting from the gustatory nucleus (the rostral part of the solitary nucleus] to the ventral posteromedial nucleus of thalamus [1] [3] (third-order neurons in turn project to the gustatory cortex).