Why is stria vascularis important?

Why is stria vascularis important?

They may be necessary to facilitate the normal process of interdigitation between marginal and basal cell processes at a particular stage during development, and the lack of adequate interdigitation in the mutants may be the cause of their strial dysfunction.

What is the Modiolus of the cochlea?

The modiolus (plural: modioli) is part of the cochlea and is a conical-shaped structure that consists of spongy (porous) bone located in the center of the cochlea and contains the spiral ganglion. The spiral lamina projects from the modiolus. Abnormality of the modiolus results in sensorineural hearing loss.

What is found in the cochlear duct?

The cochlear duct contains the organ of Corti. This is attached to the basilar membrane. It also contains endolymph, which contains high concentrations of K+ for the function of inner hair cells and outer hair cells in the organ of Corti.

How does stria vascularis work?

Function. The stria vascularis produces endolymph for the scala media, one of the three fluid-filled compartments of the cochlea. This maintains the ion balance of the endolymph that surround inner hair cells and outer hair cells of the organ of Corti. It secretes lots of K+, and may also secrete H+.

What is the stria vascularis made of?

The stria vascularis, composed of marginal, intermediate, and basal cells, is responsible for maintaining the ion composition of the endolymph and producing an endocochlear potential (EP) in the scala media [1,2].

What is modiolus quizlet?

Modiolus. the central core of bone within the cochlea. It forms the axis of the cochlear spiral, which coils for 2.75 turns.

Why is the cochlear duct important?

The cochlear duct contains the organ of Corti, which is located on its lower wall and plays an essential role in the sense of hearing. Thus, the cochlear duct completely follows the anatomy of the bony labyrinth.

What is the function of the stria vascularis the cells that line the cochlea duct?

What is the difference between endolymph and perilymph?

Endolymph is the fluid found inside the membranous labyrinth while perilymph is the fluid that surrounds the endolymph, located inside the bony labyrinth. The main difference between endolymph and perilymph is their location and function.

What is modiolus made of?

Anatomical terminology In facial anatomy, the modiolus is a chiasma of facial muscles held together by fibrous tissue, located lateral and slightly superior to each angle of the mouth. It is important in moving the mouth, facial expression and in dentistry.

What is the function of stria vascularis of cochlear duct?

Stria vascularis of cochlear duct. It produces endolymph for the scala media, one of the three fluid-filled compartments of the cochlea. The stria is a somewhat stratified epithelium containing primarily three cell types (marginal, intermediate, and basal cells) and intraepithelial capillaries.

What is the stria vascularis in anatomy?

Anatomical terminology. The upper portion of the spiral ligament (which forms the outer wall of the cochlear duct) contains numerous capillary loops and small blood vessels, and is termed the stria vascularis.

Does stria vascularis and endocochlear potential dysfunction affect hair cells?

A possible explanation for this observation is that dysfunction of the stria vascularis and endocochlear potential affects both outer and inner hair cells. Examples of tuning curves before and after furosemide treatment are shown in Figure 27.2. Fig. 27.2.

What does the spiral ligament do in the cochlear?

[edit on Wikidata] The upper portion of the spiral ligament (which forms the outer wall of the cochlear duct) contains numerous capillary loops and small blood vessels, and is termed the stria vascularis. It produces endolymph for the scala media, one of the three fluid-filled compartments of the cochlea.