The term "membrana vestibularis Reissneri" refers to a membrane inside the ear. It is pronounced /mɛmˈbreɪnə vɛsˈtɪbjʊˌlærɪs ˈraɪsnəraɪ/ in International Phonetic Alphabet (IPA) transcription. The spelling of the word follows standard Latin rules, with "membrana" meaning "membrane," "vestibularis" meaning "related to the vestibule of the ear," and "Reissneri" being the genitive (possessive) form of the name Reissner, the German anatomist who first described the membrane in 1840. Proper pronunciation and spelling are critical in medical terminology to avoid confusion and ensure accurate communication between healthcare providers.
The membrana vestibularis Reissneri is a thin and delicate structure found within the cochlea of the human ear. It is a part of the vestibular membrane system and specifically exists between the scala vestibuli and scala media. This structure separates the scala vestibuli from the scala media, which are two of the parallel fluid-filled compartments within the cochlea.
The membrana vestibularis Reissneri is composed of epithelial cells that are tightly packed together to form a continuous and impermeable barrier. Its main function is to protect and maintain the unique fluid environment within the scala media, which is crucial for the proper transmission of sound waves and the process of hearing.
In addition to its protective function, the membrana vestibularis Reissneri also plays a role in the maintenance of the ionic composition and the pressure balance of the fluid within the scala media. It helps to regulate the concentration of various ions, such as potassium and sodium, ensuring the optimal functioning of the cochlea and the proper transmission of auditory signals to the brain.
Overall, the membrana vestibularis Reissneri is an essential component of the inner ear's complex structure. Its intricate composition and function are vital for the normal functioning of the auditory system, allowing us to perceive and interpret sounds in our environment.
Reissner's vestibular membrane, a delicate homogeneous membrane forming the roof of the ductus cochlearis, or scala media, and separating it from the cavity of the scala vestibularis.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.