How does the basilar membrane allow us?
The movement of the basilar membrane is essentially what allows humans to hear through their ears. It works like this: the movement of the basilar membrane causes the hair cells' cilia to brush gently against the surface of the tectorial membrane.
How does the basilar membrane allow us to differentiate sounds of different pitch?
The basilar membrane is the main mechanical element of the inner ear. It possesses graded mass and stiffness properties over its length, and its vibration patterns have the effect of separating incoming sound into its component frequencies that activate different cochlear regions.
What does the basilar membrane do quizlet?
The cochlea is a (coiled up snail-shell looking) thing in the ear that contains the basilar membrane(, which contains all the most important hearing stuff.) It has two holes, the Oval Window and the Round Window. (The stapes presses against the oval window, transmitting vibrations into the fluid in the cochlea.
What does the basilar do?
The basilar artery is the main artery that supplies blood to the back portion of your brain. It carries oxygen-rich blood to your brainstem, cerebellum and occipital lobes. Several conditions, such as blood clots or aneurysms, can disrupt blood flow in your brain.
How does the basilar membrane respond to a sound wave?
When sound waves produce fluid waves inside the cochlea, the basilar membrane flexes, bending the stereocilia that attach to the tectorial membrane.
What happens when the basilar membrane moves?
The movement of the basilar membrane causes hair cell stereocilia movement. The hair cells are attached to the basilar membrane, and with the moving of the basilar membrane, the tectorial membrane and the hair cells are also moving, with the stereocilia bending with the relative motion of the tectorial membrane.
How does the basilar membrane react to sounds of different frequencies?
In other words, each point along the basilar membrane that is set in motion vibrates at the same frequency as the sound impinging on the ear, but different frequency sounds cause a peak in the wave at different positions on the basilar membrane (Figure 11a).
Why is it important for the basilar membrane to move quizlet?
Why is it important for the basilar membrane to move? Movement of the basilar membrane causes hair cells to bend, releasing neurotransmitters.
What does a hair cell do when the portion of the basilar membrane to which it is attached vibrates?
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.
How does the basilar membrane respond to different frequencies?
As a consequence of the mechanical properties of the organ of Corti, complex sounds are decomposed into a spectral series of signals distributed along the cochlear partition. At low sound pressure levels the basilar membrane responds most vigorously to low frequencies at its apex and to high frequencies at the base.
Why is it important for the basilar membrane to move?
Terms in this set (18) Why is it important for the basilar membrane to move? Movement of the basilar membrane causes hair cells to bend, releasing neurotransmitters.
Why is it important for the basilar membrane to move explain your answer?
Movement of the basilar membrane in response to sound waves causes the depolarization of hair cells in the organ of Corti. The hair cells transduce auditory signals into electrical impulses.
Does the basilar membrane move?
The basilar membrane moves up and down in response to incoming sound waves, which are converted to traveling waves on the basilar membrane.
How does the basilar membrane respond to complex auditory signals that are made up of multiple frequency components?
As a consequence of the mechanical properties of the organ of Corti, complex sounds are decomposed into a spectral series of signals distributed along the cochlear partition. At low sound pressure levels the basilar membrane responds most vigorously to low frequencies at its apex and to high frequencies at the base.
How does the frequency of sound waves determine the movement of the basilar membrane?
The higher the frequency of the sound imposed, the shorter the distance the waves travel. Thus, a tone of a given frequency causes stimulation to reach a peak at a certain place on the basilar membrane.
When the basilar membrane moves What happens to the hair cells of the spiral organ?
As the basilar and tectorial membranes move up and down with the traveling wave, the hinge mechanism causes the tectorial membrane to move laterally over the hair cells. This lateral shearing motion bends the cilia atop the hair cells, pulls on the fine tip links, and opens the trap-door channels (See Figure 12.1).
What happens to the hair cells when the basilar membrane vibrates?
When sound-induced basilar membrane vibrations deflect hair bundles of the outer hair cells, mechanoelectrical transduction of these cells generates the receptor potential (Dallos et al., 1982; Russell and Sellick, 1983).
How does the basilar membrane vibrate?
The motion of the stapes against the oval window sets up waves in the fluids of the cochlea, causing the basilar membrane to vibrate. This stimulates the sensory cells of the organ of Corti, atop the basilar membrane, to send nerve impulses to the brain.