How do we listen answer in perfect biology
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The ear performs certain functions of hearing and keeping a balanced equilibrium.
MECHANISM OF HEARING:
The sound waves which are consistently travelling are needing a medium or a purpose to move, that is, air. The sound waves are then collected into the external ear to some extent. They pass throughout the external auditory Meatus to the tympanic membrane (known informally as eardrum) which is caused to vibrate by the means of waves. The vibrations are transmitted via the middle ear by the malleus, incus and to the stapes bones. The latter then fir to the ovalis or fenestra ovalis. The perilymph of the internal ear receives the vibration through those membrane coverings, fenestra ovalis. From the perilymph the vibrations are transferred to to the scala vestibuli of cochlea and then to the scala media through the Reissner's membrane. Thereafter, the movements of endolymph and tectorial membranes are stimulated by the sensory or sensitive messengers of the organ of Corti.
The impulses thus, received by the sensory hair or messengers are carried to the brain (the temporal lobe of the cerebral hemisphere are important at the receiving ends) through the auditory nerve where the sensation of hearing is felt and recognised.
It is evident that, throughout the mechanism, that the external and middle ears serve to transmit sound waves to the internal ear. It is in this internal ear that the transformation of the vibrations into the nerve impulses for relay to the brain ar taking place. During a loud sound, or an event of severe sounds, the vibrations of some sound waves are transferred from scala vestibuli to scala tympani through helicoterma. From scala tympani the sound waves are successfully transmitted to the tympanic or middle ear cavity through the membrane covering the membranous organ, fenestra rotunda. From the tympanic cavity the sound waves are transferred through the Eustachian tube to the pharynx.
MECHANISM OF HEARING:
The sound waves which are consistently travelling are needing a medium or a purpose to move, that is, air. The sound waves are then collected into the external ear to some extent. They pass throughout the external auditory Meatus to the tympanic membrane (known informally as eardrum) which is caused to vibrate by the means of waves. The vibrations are transmitted via the middle ear by the malleus, incus and to the stapes bones. The latter then fir to the ovalis or fenestra ovalis. The perilymph of the internal ear receives the vibration through those membrane coverings, fenestra ovalis. From the perilymph the vibrations are transferred to to the scala vestibuli of cochlea and then to the scala media through the Reissner's membrane. Thereafter, the movements of endolymph and tectorial membranes are stimulated by the sensory or sensitive messengers of the organ of Corti.
The impulses thus, received by the sensory hair or messengers are carried to the brain (the temporal lobe of the cerebral hemisphere are important at the receiving ends) through the auditory nerve where the sensation of hearing is felt and recognised.
It is evident that, throughout the mechanism, that the external and middle ears serve to transmit sound waves to the internal ear. It is in this internal ear that the transformation of the vibrations into the nerve impulses for relay to the brain ar taking place. During a loud sound, or an event of severe sounds, the vibrations of some sound waves are transferred from scala vestibuli to scala tympani through helicoterma. From scala tympani the sound waves are successfully transmitted to the tympanic or middle ear cavity through the membrane covering the membranous organ, fenestra rotunda. From the tympanic cavity the sound waves are transferred through the Eustachian tube to the pharynx.
DavidOtunga:
There you go sister, be tenison free and take this as notes, from a assured physician and an all in one doctor :)
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- The some waves passes through ear canal.
- Hits ear drum
- Passes through the three bones
- These bones make the vibrations strong
- cochlea converys to electro chemical signals
- passes to brain
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