Definition

1. Noun:
   • A thin epithelial membrane lining the ventricles of the brain and the central canal of the spinal cord. It is composed of ependymal cells.

Usage

• The word "ependyma" is a specialized anatomical and histological term. It is used almost exclusively in scientific, medical, and biological contexts to describe this specific neural tissue structure.
• It functions as a singular noun. The plural form is "ependymas" or, more commonly in technical literature, "ependymata."

Examples

• Noun:
  • The cerebrospinal fluid is in direct contact with the ependyma.
  • Pathologists examined the ependyma for signs of abnormality.
  • The tumor originated from the ependymal cells of the ependyma.

Advanced Usage

• "Ependymal" (adjective): Pertaining to or of the nature of the ependyma.
  • Ependymal cells are ciliated to facilitate the flow of cerebrospinal fluid.
• In medical pathology, tumors arising from this tissue are called ependymomas.

Variants and Related Words

• Ependymal (adj): Relating to the ependyma.
• Ependymocyte (n): Another term for an ependymal cell.
• Ependymitis (n): Inflammation of the ependyma.

Synonyms

• Ependymal layer: A descriptive synonym emphasizing its structure.
• Ventricular lining: A functional synonym describing its location and role.

Notes on Meaning

• The ependyma is a critical structure in the central nervous system, serving as a protective lining and playing a role in the production and circulation of cerebrospinal fluid (CSF). It is part of the broader category of neuroepithelium.

Noun

1. thin epithelial membrane lining the ventricles of the brain and the spinal cord canal