internal medullary lamina


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med·ul·lar·y lam·i·nae of thal·a·mus

layers of myelinated fibers that appear on transverse sections of the thalamus; the lamina medullaris lateralis [TA] (external medullary lamina [TA]) marks the ventral and lateral borders of the thalamus and delimits it from the subthalamus and the reticular nucleus of thalamus; the lamina medullaris medialis [TA] (internal medullary lamina [TA]) is interposed between the dorsomedial (mediodorsal) and ventral nuclei of the thalamus and encloses the intralaminar nuclei (centromedian, paracentral, and central lateral nuclei).

internal medullary lamina

The layer of white matter that divides the gray matter of the thalamus into three parts: anterior, medial, and lateral.
See also: lamina
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