What is a Helicotrema?
What is a Helicotrema?
Medical Definition of helicotrema : the minute opening by which the scala tympani and scala vestibuli communicate at the top of the cochlea of the ear.
Is the organ of Corti in the cochlear duct?
The organ of Corti, the sensory organ for hearing, lies within the cochlear duct 2. roof (vestibular membrane): separates the cochlear duct from the scala vestibuli. floor: separates the cochlear duct from the scala tympani. It also consists of the lamina modiolus and basilar membrane, which supports the organ of Corti.
What is modiolus in ear?
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 does helicotrema contain?
inner ear anatomy and function The scala vestibuli and scala tympani, which are filled with perilymph, communicate with each other through an opening at the apex of the cochlea, called the helicotrema, which can be seen if the cochlea is sliced longitudinally down the middle.
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.
Which is the best definition of the term helicotrema?
Scarpa hiatus – a semilunar opening at the apex of the cochlea through which the scala vestibuli and the scala tympani of the cochlea communicate with one another. Synonym(s): helicotrema. Scarpa liquor – the fluid contained within the membranous labyrinth of the inner ear.
Where is the helicotrema located in the ear?
/hel·i·co·tre·ma/ (hel″ĭ-ko-tre´mah) a passage in the ear between the scala tympani and scala vestibuli. Helicotrema, shown in the interior of the right bony labyrinth.
Where does the helicotrema meet the cochlear labyrinth?
helicotrema (plural helicotremata or helicotremas) (anatomy) The part of the cochlear labyrinth where the scala tympani and the scala vestibuli meet.