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brain arachnoid mater

Go to external page http://purl.obolibrary.org/obo/UBERON_0005397

An arachnoid mater that surrounds a brain. [ ]

Term info

Label

brain arachnoid mater

Synonyms
  • arachnoidea mater cranialis
  • arachnoidea mater encephali
  • brain arachnoid matter
  • cranial arachnoid mater
database cross reference
latin term
arachnoidea mater cranialis [ FMA : TA FMA : 83981 ]

latin term
arachnoidea mater encephali [ FMA : TA FMA : 83981 ]

external definition

The middle membrane of the three mammalian meninges covering the brain and spinal cord. [TFD][VHOG]

homology notes

In fishes, the meninges consist of a single membrane, the primitive meninx, wrapped around the brain and spinal cord. With the adoption of terrestrial life, the meninges doubled. In amphibians, reptiles, and birds, the meninges include a thick outer dura mater derived from mesoderm and a thin inner secondary meninx. (...) In mammals, the dura mater persists, but division of the secondary meninx yields both the arachnoid and the pia mater from ectomesoderm.[well established][VHOG]

id

UBERON:0005397

Term relations

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