Arachnoid mater
Definition
An alternative medical or Latin spelling variant for arahnoidă (arachnoid mater); the middle, thin, and avascular meningeal membrane situated between the dura mater and pia mater, surrounding the brain and spinal cord. Its name derives from its fine, reticular structure resembling a spider's web, playing a crucial physiological role in defining the subarachnoid space through which cerebrospinal fluid circulates.
Bilingual Equivalents
- Arachnoid mater
- Arachnoid membrane
Grammatical & Source Details
| Inflection Type | Feminine noun, regular plural forms and standard neuroanatomical case updates. |
| Formation | Scientific Latin anatomical term based on ancient Greek roots describing web-like visual characteristics. |
| Spelling / Pronunciation | [ˌærækˈnɔɪdiə] |
| Source | Nomina Anatomica and Comprehensive Lexicon of Neurological Sciences |
Contextual Usage Examples
RO: În timpul intervenției chirurgicale, neurochirurgul a incizat cu grijă stratul numit arachnoidea pentru a ajunge la vasele profunde.
EN: During the surgical intervention, the neurosurgeon carefully incised the layer called arachnoidea to reach the deep vessels.
RO: Inflamația membranelor cerebrale care afectează pia mater și arachnoidea este cunoscută medical sub numele de leptomeningită.
EN: The inflammation of the cerebral membranes affecting the pia mater and arachnoidea is medically known as leptomeningitis.
RO: Structura histologică din arachnoidea prezintă prelungiri filamentoase delicate care se prind direct de stratul interior.
EN: The histological structure of the arachnoidea exhibits delicate filamentous extensions that attach directly to the inner layer.
Idioms & Phrases
Spațiul sub arachnoidea / Subarachnoid space
RO: Intervalul anatomic situat sub această membrană, umplut cu lichid cefalorahidian care amortizează șocurile mecanice asupra creierului.
EN: The anatomical interval situated beneath this membrane, filled with cerebrospinal fluid that cushions mechanical shocks to the brain.
Granulații arachnoidea / Arachnoid granulations / Pacchionian bodies
RO: Prelungiri microscopice ale acestei membrane care pătrund în sinusurile venoase pentru a permite resorbția lichidului cefalorahidian.
EN: Microscopic extensions of this membrane that project into the venous sinuses to allow the resorption of cerebrospinal fluid.
Vilae arachnoidea / Arachnoid villi
RO: Structuri vasculare specializate atașate membranei, esențiale pentru menținerea presiunii intracraniene constante.
EN: Specialized vascular structures attached to the membrane, essential for maintaining constant intracranial pressure.
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