VALVULA SPIRALIS Meaning and
Definition
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Valvula spiralis refers to a structure located within the cochlea of the inner ear. Specifically, it is a ridge-shaped, spiral portion of the membranous labyrinth that runs along the length of the cochlear duct. This intricate structure, often referred to as the cochlear spiral, is composed of thin, delicate tissue.
The valvula spiralis plays a crucial role in the hearing process. It houses the organ of Corti, a specialized sensory organ that contains thousands of hair cells, which convert sound vibrations into electrical signals that can be interpreted by the brain. These hair cells are responsible for the transduction of mechanical energy from the movement of the fluid within the cochlea into electrical signals that can be perceived as sound.
In addition to its role in converting sound into electrical signals, the valvula spiralis also plays a role in the amplification and filtering of sound frequencies. It consists of a complex arrangement of structures, including the tectorial membrane, supporting cells, and various sensory receptors, which work together to transmit and process auditory information.
Overall, the valvula spiralis is a vital anatomical structure within the cochlea of the inner ear, responsible for transmitting sound vibrations to the auditory nerve for further processing and interpretation by the brain. Its intricate design allows for the perception and discrimination of different sound frequencies, contributing to the overall richness and quality of hearing.
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Valve of Heister, a series of crescentic folds of the mucous membrane of the cystic bile-duct, directed obliquely around the inner surface of the canal.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for VALVULA SPIRALIS
Etymology of VALVULA SPIRALIS
The term "valvula spiralis" is derived from Latin.
- "Valvula" in Latin means "small valve" or "little door".
- "Spiralis" is the neuter form of the Latin word "spiral", which indicates something that is coiled or twisted in a spiral shape.
In the context of anatomy, the term "valvula spiralis" refers to the spiral-shaped structure present in the cochlea of the inner ear, also known as the cochlear duct or scala media. This structure is involved in the process of hearing and plays a crucial role in sound transmission and sensory perception.
