What happens when the hair cells of the spiral organ Bend?
pressure waves of the endolymph cause the basilar membrane to vibrate, moving the hair cells of the spiral organ against the tectorial membrane. Bending of the hair cell produces receptor potentials that ultimately lead to the generation of nerve impulses.
What is the spiral organ responsible for?
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 the function of the inner hair cells in the spiral organ organ of Corti )?
The organ of Corti rests on the basilar membrane and contains two types of hair cells: inner hair cells and outer hair cells. Inner hair cells transduce sound from vibrations to neural signals via the shearing action of their stereocilia.
What is the function of the outer hair cells in the spiral organ organ of Corti )? Quizlet?
What is the function of the outer hair cells in the spiral organ (organ of Corti)? -They act as receptors for the otoliths.
What does a hair cell do when the portion of the basilar membrane to which it is attached vibrates?
Transduction of mechanical vibrations. The hair cells located in the organ of Corti transduce mechanical sound vibrations into nerve impulses. They are stimulated when the basilar membrane, on which the organ of Corti rests, vibrates.
In what substance are the stereocilia of the spiral organ hair cells embedded?
The crista contains hair cells with stereocilia oriented in a consistent direction. The cupula, a thin vane, sits atop this crest, filling the lumen of the semicircular duct. The stereocilia of the hair cells are embedded in the gelatinous cupula.
How many hair cells are in organ of Corti?
Arrangement of Hair Cells The hair cells of the organ of Corti are arranged in four rows along the length of the basilar membrane. Individual hair cells have multiple strands called stereocilia. There may be 16,000 – 20,000 such cells.
What are the hairs on the hair cells of the spiral organ?
The spiral ganglion sends axons into the cochlear nerve. At the top of the hair cell is a hair bundle containing stereocilia, or sensory hairs, that project upward into the tectorial membrane, which lies above the stereocilia in the cochlear duct.
Which auditory Ossicle is attached to the tympanic membrane?
malleus
The malleus (Latin: “hammer”) articulates with the incus through the incudomalleolar joint and is attached to the tympanic membrane (eardrum), from which vibrational sound pressure motion is passed.
What are three auditory ossicles?
The auditory ossicles (malleus, incus, and stapes) play a key role in this function.
What are ossicles?
Medical Definition of ossicle : a small bone or bony structure especially : any of three small bones of the middle ear including the malleus, incus, and stapes.