What is osseous spiral lamina?

The osseous spiral lamina (lamina spiralis ossea) is a dual bony shelf or ledge (vestibular and a tympanic lamella) which projects from the modiolus into the interior of the canal, and, like the canal, takes two-and three-quarter turns around the modiolus.

Where is the osseous spiral lamina?

Anatomical terms of bone The osseous spiral lamina is a bony shelf or ledge which projects from the modiolus into the interior of the canal, and, like the canal, takes two-and-three-quarter turns around the modiolus.

What is the Helicotrema?

The helicotrema (plural: helicotremas or helicotremata) is a part of the cochlear apex where the scala tympani and scala vestibuli meet. It is located at the termination of the spiral lamina.

Where is the spiral ligament?

The spiral ligament is a fibrous cushion located between the stria vascularis and the bony otic capsule.

What is the function of osseous spiral lamina?

At the cochlear apex, the spiral lamina ends in a hook-shaped process called the hamulus laminae spiralis, which assists in forming the helicotrema. It supports the organ of Corti and the neurovascular termination to the modiolus.

What is the spiral ligament?

Spiral ligament secures the membranous COCHLEAR DUCT to the bony spiral canal of the COCHLEA. Its spiral ligament fibrocytes function in conjunction with the STRIA VASCULARIS to mediate cochlear ion homeostasis.

What is the spiral organ?

The organ of Corti, also known as the spiral organ, is the receptor organ for hearing, located in the cochlea (housed inside the scala media). It is a strip of sensory epithelium made of hair cells which act as the sensory receptors of the inner ear.

What is a Kinocilium?

The kinocilium is an immotile primary cilium that is found at the apical surface of auditory receptor cells. Hair bundles, the mechanosensory device of the sensory hair cells, are composed of height-ranked rows of stereocilia and a single kinocilium that are interconnected by extracellular proteinaceous links.

What is the spiral organ of Corti?

What does the spiral ligament do?

What is the tunnel of Corti?

Corti is the arch, or tunnel, of Corti, formed by two rows of pillar cells, or rods. They separate a single row of larger, pear-shaped inner hair cells from three or more rows of smaller, cylindrical outer hair cells.

What is the function of the spiral ligament?

A spiral thickening of the fibrous lining of the cochlear wall. Spiral ligament secures the membranous COCHLEAR DUCT to the bony spiral canal of the COCHLEA. Its spiral ligament fibrocytes function in conjunction with the STRIA VASCULARIS to mediate cochlear ion homeostasis.