Plate 17.358 Section Through Putamen
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 at this most lateral parasagittal section, only the putamen of the basal ganglia nuclei is seen. In subsequent more medial sections, both the caudate nucleus and globus pallidus will also be visible.
Anterior commissure: A compact fiber bundle ventral to putamen. Interconnects olfactory bulbs and the temporal cortices.
Amygdala: From the Greek word amygdala, almond. The nuclei resemble almonds in shape and are located in the tip of the temporal lobe beneath the cortex of the uncus. Part of the limbic system and intimately connected with different components of the limbic system. Concerned with a variety of functions related to the limbic system such as emotional behavior, food intake, arousal, sexual activity, and a variety of motor activities.
Cerebellum: Located underneath the posterior part of the cerebral hemisphere.
Dentate gyrus: So-named because of its toothed or beaded surface appearance. A component of the hippocampal formation. Occupies the interval between the hippocampus and the parahippocampal gyrus.
Internal capsule: A component of the internal capsule, known as the retrolenticular part and characteristically located behind the putamen, is seen here. Note the different components of the internal capsule (anterior limb, posterior limb) in other sections. The retrolenticular component of the internal capsule contains the visual radiation, corticotectal, corticonigral, and corticotegmental fibers.
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