Draw a labelled diagram of human ear. also write it's construction.
Answers
Answer:
Human ear is a sense organ responsible for hearing and body balance. The outer ear receives the sound waves and transmits them down the ear canal to the eardrum. This causes the eardrum to vibrate and sound is produced.
Explanation:
The External ear or the outer ear consists of:
Pinna/auricle is the outermost section of the ear.
The external auditory canal links the exterior ear to the inner or the middle ear.
The tympanic membrane, also known as the eardrum, separates the outer ear from the inner ear.
The Middle ear comprises:
Ossicles are the three tiny bones connected to each other that transmit sound waves to the inner ear. These three tiny bones are stapes, malleus, and incus.
Eustachian Tube is a tube that connects the middle ear to the back of the nose. It helps to maintain equal pressure in the middle ear which facilitates the proper transmission of sound waves.
The Inner ear consists of:
Cochlea that comprises the nerves of hearing.
Semicircular canals that contain the receptors that help in maintaining balance.
Vestibule also contains the receptors for body balance.
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Answer:
The external ear receives and collects the sound waves and then directs them to the eardrum. The sound waves travel through the external auditory canal. The eardrum vibrates and these vibrations are passed to the three ear ossicles (malleus, incus and stapes) in the middle ear.
The external ear receives and collects the sound waves and then directs them to the eardrum. The sound waves travel through the external auditory canal. The eardrum vibrates and these vibrations are passed to the three ear ossicles (malleus, incus and stapes) in the middle ear. The ear ossicles increase the intensity of the sound vibrations and transmit them to the oval window. The vibrations pass through the oval window till the cochlea where they generate the waves in the lymph present in the cochlea.
The external ear receives and collects the sound waves and then directs them to the eardrum. The sound waves travel through the external auditory canal. The eardrum vibrates and these vibrations are passed to the three ear ossicles (malleus, incus and stapes) in the middle ear. The ear ossicles increase the intensity of the sound vibrations and transmit them to the oval window. The vibrations pass through the oval window till the cochlea where they generate the waves in the lymph present in the cochlea. Firstly the waves are generated in the perilymph present in the scala vestibuli and then in the endolymph present in the scala media. The waves in the endolymph induce a ripple in the basilar membrane. The basilar movements bend the hair cells present in the organ of Corti pressing them against the tectorial membrane. This generates the nerve impulse in the associated afferent neurons. The impulse gets transmitted to the auditory region of the brain via the auditory nerve. The impulse gets analysed and thus the sound is recognized.
Explanation:
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