meninx primitiva


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meninx primitiva

[′me‚niŋks ‚prim·ə′tī·və]
(vertebrate zoology)
The single membrane covering the brain and spinal cord of certain submammalian vertebrates.
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References in periodicals archive ?
Intracranial lipomas represent a congenital malformation with the abnormal differentiation of the meninx primitiva.
Although the etiology and pathogenesis of intracranial lipomas are nor clearly understood, derivation from the embryological "meninx primitiva" theory is the most plausible theory that it suggests an abnormal, persistent focus of meninx primitiva differention into adipose tissue and maturation into a lipoma.