Spiral limbus

Spiral limbus is a term used in anatomy to describe a spiral-shaped structure found in the ear. It is a part of the cochlea, which is the spiral cavity of the inner ear responsible for processing sound. The spiral limbus is located on the upper part of the cochlea's spiral lamina.

Structure

The spiral limbus is a bony ridge that runs along the upper part of the spiral lamina. It is composed of two parts: the vestibular lip and the tympanic lip. The vestibular lip is a thin, sharp edge that faces the vestibule of the ear, while the tympanic lip is a broader, rounded edge that faces the tympanic cavity.

Function

The spiral limbus plays a crucial role in the transmission of sound waves through the ear. It helps to guide the sound waves from the middle ear to the cochlea, where they are converted into electrical signals that can be interpreted by the brain.

Clinical significance

Damage to the spiral limbus can result in hearing loss or other auditory problems. This can occur as a result of trauma, infection, or certain medical conditions such as otosclerosis.

See also

• Cochlea
• Inner ear
• Middle ear
• Otosclerosis

References

Spiral limbus Resources
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