Plate 17.359 Section Through Lenticular Nucleus
Ronald A. Bergman, Ph.D., Adel K. Afifi, M.D., Paul M. Heidger,
Peer Review Status: Externally Peer Reviewed
Human, 10% formalin, Weigert's hematoxylin (Loyez), 1 x.
Centrum semiovale: White matter core of the cerebral hemispheres. Contains myelinated nerve fibers entering or leaving the cerebral hemispheres.
Putamen: One of the basal ganglia nuclei. Concerned with motor control. Note that this section also shows the globus pallidus, another component of the basal ganglia.
Globus pallidus: Another of the basal ganglia nuclei. Notice the difference in appearance from putamen. Globus pallidus is traversed by heavily myelinated fiber bundles. Note relationship to the anterior commissure.
Anterior commissure: A compact fiber bundle in close proximity to globus pallidus. Interconnects the olfactory bulbs and the temporal cortices.
Hippocampus: From the Greek word hippocampos, seahorse. The hippocampus is a major component of the limbic system. In man, the hippocampus is the largest component of the hippocampal formation. It plays an important role in memory function.
Cerebellum: Located ventral to the posterior part of the cerebral hemisphere.
Dentate gyrus: Another component of the hippocampal formation. So-named because of its toothed or beaded surface appearance. Occupies the interval between the hippocampus and the parahippocampal gyrus.
Lateral geniculate nucleus: One of the thalamic nuclei. Concerned with visual function. Receives fibers from the optic tract and projects into the primary visual cortex via the geniculocalcarine fiber pathway.
Pulvinar: One of the lateral group of thalamic nuclei. Has reciprocal connections with the medial and lateral geniculate bodies caudally and the association parietal, temporal, and occipital cortices rostrally. Involved in several neural functions, including vision, audition, speech, and pain.
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