can someone explain structure of the inner ear to me. ( 11th standard) it's for a lot of points
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heya!!
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Ear helps to hear and helps in maintaining the equilibrium of our body.
● EXTERNAL EAR :
It is the visible part of the ear on either side of our head. it is a flap like structure, called the pinna. it leads to the ear canal. the pinna is crumpled and made up of cartilage.
pinna has cermuminous and sebaceous glands. these help to keep the ear canal lubricated prevent the dust and other particles from entering into the ear canal.
the ear canal is also called as ( Auditory meatus). A thin layer called tympanum or ear drum is present at the end of the auditory meatus. it is present in between the external and middle ear. it is in the shape of a cone. it's narrow area connects to the first bone malleus of the middle ear.
● MIDDLE EAR :
Middle ear plays an important role in amplifying the vibrations received on the tympanum membrane. the chain Of three bones, malleus , incus and stapes helps to do same . oval window is a membrane , covered ending of the middle ear which opens into the inner ear through round window.
● INTERNAL EAR OR INNER EAR :
internal ear consists of bony labyrinth enclosing the membranous labyrinth. the membranous labyrinth consists of vestibule, three semicircular canals and cochlea. the anterior part of the vestibule is sacculus and the posterior part is Utriculus. Nerve fibres from them form vestibular nerve.
the semicircular canals are connected to this nerve and filled with endoplymph. Vestibule and semilunar circles together form vestibular apparatus. it maintains the equilibrium of the body, pertaining to the posture and balance of the body.
cochlea is a spiral shaped structure. it has three parallel tibes called scala vestibuli, scala media and scala tympani.
the first two are separated by the vestibular membrane. the second and third are separated by the basilar membrane. scala vestibuli and tympani are filled with endolymph. scala media is filled with endolymph. it contains organ of corti and tiny cells called primary cells.
hope my answer helps you ✌
here is your answer⬇️⬇️
Ear helps to hear and helps in maintaining the equilibrium of our body.
● EXTERNAL EAR :
It is the visible part of the ear on either side of our head. it is a flap like structure, called the pinna. it leads to the ear canal. the pinna is crumpled and made up of cartilage.
pinna has cermuminous and sebaceous glands. these help to keep the ear canal lubricated prevent the dust and other particles from entering into the ear canal.
the ear canal is also called as ( Auditory meatus). A thin layer called tympanum or ear drum is present at the end of the auditory meatus. it is present in between the external and middle ear. it is in the shape of a cone. it's narrow area connects to the first bone malleus of the middle ear.
● MIDDLE EAR :
Middle ear plays an important role in amplifying the vibrations received on the tympanum membrane. the chain Of three bones, malleus , incus and stapes helps to do same . oval window is a membrane , covered ending of the middle ear which opens into the inner ear through round window.
● INTERNAL EAR OR INNER EAR :
internal ear consists of bony labyrinth enclosing the membranous labyrinth. the membranous labyrinth consists of vestibule, three semicircular canals and cochlea. the anterior part of the vestibule is sacculus and the posterior part is Utriculus. Nerve fibres from them form vestibular nerve.
the semicircular canals are connected to this nerve and filled with endoplymph. Vestibule and semilunar circles together form vestibular apparatus. it maintains the equilibrium of the body, pertaining to the posture and balance of the body.
cochlea is a spiral shaped structure. it has three parallel tibes called scala vestibuli, scala media and scala tympani.
the first two are separated by the vestibular membrane. the second and third are separated by the basilar membrane. scala vestibuli and tympani are filled with endolymph. scala media is filled with endolymph. it contains organ of corti and tiny cells called primary cells.
hope my answer helps you ✌
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tommy01:
yeah
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heya...
Here is your answer....
Inner ear :
Internal ear consists of bony labyrinth enclosing the membranous labyrinth. The membranous labyrinth consists of vestibule,three semicircular canals and cochlea. The anterior part of the vestibule is sacculus and the posterior part is utriculus. Nerve fibers from them from the vestibular nerve.
The semicircular canals are connected to the vestibule and filled with endolymph. vestibule and semilunar circles together form vestibular apparatus. It maintains the equilibrium of the body pertaining to the posture and balance of the body.
Cochlea is a spherical shaped structure. It has three parallel tubes called scala vestibuli, scala media and scala tympani.
The first two separated by the vestibular membrane. The second and third are separated by the basilar membrane. Scala vestibuli and Scala tympani are filled with perilymph. Scala media is filled with endolymph.It contains organ of corti and tiny cells called primary sensory cells.
Cochlear nerve fibres form cochlear nerve. The vestibular and cochlear nerves join together and form auditory nerve.
It may help you....☺☺
Here is your answer....
Inner ear :
Internal ear consists of bony labyrinth enclosing the membranous labyrinth. The membranous labyrinth consists of vestibule,three semicircular canals and cochlea. The anterior part of the vestibule is sacculus and the posterior part is utriculus. Nerve fibers from them from the vestibular nerve.
The semicircular canals are connected to the vestibule and filled with endolymph. vestibule and semilunar circles together form vestibular apparatus. It maintains the equilibrium of the body pertaining to the posture and balance of the body.
Cochlea is a spherical shaped structure. It has three parallel tubes called scala vestibuli, scala media and scala tympani.
The first two separated by the vestibular membrane. The second and third are separated by the basilar membrane. Scala vestibuli and Scala tympani are filled with perilymph. Scala media is filled with endolymph.It contains organ of corti and tiny cells called primary sensory cells.
Cochlear nerve fibres form cochlear nerve. The vestibular and cochlear nerves join together and form auditory nerve.
It may help you....☺☺
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