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).
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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
Medical Dictionary, © 2009 Farlex and Partners
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