Definition

1. Noun:
   • An opening in the cochlea: The fenestra rotunda is a membrane-covered opening in the inner ear, specifically in the bony wall of the cochlea.
   • A specific anatomical structure: It is one of two small windows (the other being the fenestra ovalis) in the temporal bone that connect the middle ear to the fluid-filled chambers of the inner ear. It functions to release pressure from the cochlear fluid.

Usage

• The fenestra rotunda is a critical component for hearing, allowing fluid within the cochlea to move.
• In anatomy, the fenestra rotunda is also known as the round window.
• Damage to the fenestra rotunda can affect hearing transmission.

Examples

• Noun:
  • Sound vibrations are transmitted from the stapes to the cochlea, with the fenestra rotunda serving as a pressure release.
  • The surgeon carefully examined the fenestra rotunda during the inner ear procedure.

Advanced Usage

• "Fenestra rotunda membrane": Refers specifically to the thin, flexible membrane that seals the opening.
  • The integrity of the fenestra rotunda membrane is essential for proper cochlear function.

Variants and Related Words

• Round window: The common English synonym for fenestra rotunda.
• Fenestra ovalis (noun): The oval window, the other opening connecting the middle ear to the inner ear.
• Cochlear window: Another descriptive term sometimes used.

Synonyms

• Round window: The direct and most frequently used synonym in medical and anatomical contexts.

Notes

• The term fenestra rotunda is primarily used in technical, medical, and anatomical descriptions. In general contexts, "round window" is more common.
• It is a fixed anatomical term; it does not have phrasal verbs or idioms associated with it.

Noun

1. fenestra leading into the cochlea