What does arachnoid mater mean?
Definitions for arachnoid mater
arach·noid mater
This dictionary definitions page includes all the possible meanings, example usage and translations of the word arachnoid mater.
Wiktionary
arachnoid maternoun
The middle layer of the meninges. A membrane that protects the brain and spinal cord below the dura mater and above the subarachnoid space and the pia mater.
Wikipedia
Arachnoid mater
The arachnoid mater (or simply arachnoid) is one of the three meninges, the protective membranes that cover the brain and spinal cord. It is so named because of its resemblance to a spider web. The arachnoid mater is a derivative of the neural crest mesoectoderm in the embryo.
Wikidata
Arachnoid mater
The arachnoid mater is one of the three meninges, the protective membranes that cover the brain and spinal cord. It is interposed between the two other meninges, the more superficial and much thicker dura mater and the deeper pia mater, from which it is separated by the subarachnoid space. The delicate arachnoid layer is attached to the inside of the dura and surrounds the brain and spinal cord. It does not line the brain down into its sulci, as does the pia mater, with the exception of the longitudinal fissure, which divides the left and right cerebral hemispheres. Cerebrospinal fluid flows under the arachnoid in the subarachnoid space. The arachnoid mater makes arachnoid villi, small protrusions through the dura mater into the venous sinuses of the brain, which allow CSF to exit the sub-arachnoid space and enter the blood stream. The arachnoid mater and dura mater are very close together throughout the cranium all the way to S2, where the two layers fuse into one layer and terminate. Sandwiched between the dura and arachnoid maters, lie some veins that connect the brain's venous system with the venous system in the dura mater. The arachnoid mater is named after the Greek words "Arachne" and suffix "-oid", and "mater", because of the fine spider web-like appearance of the delicate fibres of the arachnoid which extend down through the subarachnoid space and attach to the pia mater.
Numerology
Chaldean Numerology
The numerical value of arachnoid mater in Chaldean Numerology is: 9
Pythagorean Numerology
The numerical value of arachnoid mater in Pythagorean Numerology is: 4
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"arachnoid mater." Definitions.net. STANDS4 LLC, 2024. Web. 24 Apr. 2024. <https://www.definitions.net/definition/arachnoid+mater>.
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