Akademik

Any membrane; specifically, one of the membranous coverings of the brain and spinal cord. SEE ALSO: arachnoid mater, dura mater, pia mater, leptomeninx. [Mod. L. fr. G. m., membrane]

- m. fibrosa rarely used term for dura mater.

- m. primitiva SYN: primitive m..

- primitive m. the embryonic loose mesenchymatous tissue surrounding the brain and spinal cord; from it the three definite meninges (arachnoid mater, dura mater, and pia mater) are derived. SYN: m. primitiva.

- m. tenuis SYN: leptomeninx.

- vascular m. rarely used term for pia mater. SYN: m. vasculosa.

- m. vasculosa SYN: vascular m..

me·ninx 'mē-niŋ(k)s, 'men-iŋ(k)s n, pl me·nin·ges mə-'nin-(.)jēz any of the three membranes that envelop the brain and spinal cord and include the arachnoid, dura mater, and pia mater

1. the thin layer of mesoderm that surrounds the brain of the embryo. It gives rise to most of the skull and the membranes that surround the brain. See also chondrocranium.

2. see meninges.