arachnoid


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Related to arachnoid: arachnoid membrane, arachnoid trabeculae, Arachnoid mater

arachnoid

[ə′rak‚nȯid]
(anatomy)
A membrane that covers the brain and spinal cord and lies between the pia mater and dura mater.
(botany)
Of cobweblike appearance, caused by fine white hairs. Also known as araneose.
(invertebrate zoology)
Any invertebrate related to or resembling the Arachnida.
References in periodicals archive ?
Although the imaging appearance of dermoid tumors is characteristic, several other intracranial lesions must be considered in the differential diagnosis, such as epidermoids, teratomas, lipomas, craniopharyngiomas, and occasionally arachnoid cysts.
It took almost two years to get to the bottom of things and realise that even though I had an arachnoid cyst it was insignificant and something I may have been born with.
CT scan abnormalities Abnormality Frequency (N) Arachnoid cyst 2 Cerebral atrophy (generalised) 1 Left temporal lobe infarction 1 Calcified granuloma 1 Multiple calcified densities bilaterally 1 Temporal lobe atrophy 1
It is hypothesized that these dural-based tumors actually arise from the arachnoid layer (Burger & Scheithauer, 2007; Hancq, Salmon, Brotchi, & Al, 2004).
You'll find characters such as the massive Empress of Racnoss - a giant arachnoid from deep within space and Davros the wizened scientist who turned his own race into Daleks, plus many more of the Doctor's enemies along with information about the characters and the roles they played.
Clinically asymptomatic glutaric aciduria type I in a 4 5/12-year-old girl with bilateral temporal arachnoid cysts.
2 mm, arachnoid, appressed, pale brown; veins simple or 1-forked, slightly immersed on both sides, ending in small hydathodes; fertile fronds similar to the sterile ones, but pinnae narrower, 3-5 mm wide; sori limited to the central part of the pinnae, i.
Normal pressure hydrocephalus (NPH) usually occurs in people with a history of arachnoid insult in which infection or bleeding affects the ability to absorb spinal fluid.
Prostaglandin D synthase (R-trace) in human arachnoid and meningioma cells: roles as a cell marker or in cerebrospinal fluid absorption, tumorigenesis, and calcification process.
1) The pathophysiologic mechanism of this phenomenon can be explained by the obliteration of the arachnoid villi by blood clots and by the development of adhesive arachnoiditis in response to irritative blood degradation products.
Preganglionic injuries refer to dural and arachnoid lesions proximal to the neurons in the spinal ganglion.