claustrum

claustrum /claus·trum/ (klaws´trum) pl. claus´tra   [L.] the thin layer of gray matter lateral to the external capsule, separating it from the white matter of the insula.

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claus·trum (klôstrm)

n. pl. claus·tra (-tr)

Any of several anatomical structures resembling a barrier, especially a thin vertical lamina of gray matter of the brain lying close to the outer portion of the lenticular nucleus, from which it is separated by the external capsule.

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claustral adj.

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claustrum

[klôs′trəm] pl. claustra

Etymology: L, a closing

1 a barrier, as a membrane that partially closes an aperture.

2 a thin sheet of gray matter, composed chiefly of spindle cells, situated lateral to the external capsule of the brain and separating the internal capsule from white matter of the insula. Also called claustrum of insula.

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claustrum

pl. claustra [L.] the thin layer of gray matter lateral to the external capsule of the brain, separating it from the white matter of the insula.