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Question
The organ of corti is a structure present in
The organ of corti is a structure present in
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Solution
The correct option is B d. Cochlea
External ear:
- Outer ear comprises - pinna and the external auditory canal (meatus) and tympanic membrane.
- The pinna collects the vibrations in the air.
- The external auditory canal extends up to the eardrum. It has very fine hair and wax-secreting glands.
Middlen ear:
- Middle ear consists of three ossicles known as the malleus, stapes and incus that are linked to one another in a chain pattern.
- The middle ear cavity is connected to the pharynx through the Eustachian tube which aids in equalizing the pressure.
Inner ear:
Inner ear consists of a membranous labyrinth and a bony labyrinth. Membranous labyrinth is filled with endolymph while the bony labyrinth is filled with perilymph.
- The membranous labyrinth consists of a vestibular apparatus and the cochlea.
1.) Vestibular apparatus
It consists of three semicircular canals and vestibule (utricle and saccule). Each semicircular canal lies in a different plane at right angles to each other. The base of the canals is swollen and is known as an ampulla containing crista ampullaris – a projecting ridge which has hair cells.
The utricle and the saccule have a projecting ridge known as macula. The macula and the crista are the particular receptors of the vestibular apparatus that have a role to play in maintaining body balance
Summary:
The organ of corti is located on the basilar membrane of the median canal of the cochlea. It contains sensory hair cells that act as auditory receptors converting the mechanical vibrations into impulses. The impulses are passed on to the brain through the auditory nerve
Final answer:
Option (d)
External ear:
- Outer ear comprises - pinna and the external auditory canal (meatus) and tympanic membrane.
- The pinna collects the vibrations in the air.
- The external auditory canal extends up to the eardrum. It has very fine hair and wax-secreting glands.
Middlen ear:
- Middle ear consists of three ossicles known as the malleus, stapes and incus that are linked to one another in a chain pattern.
- The middle ear cavity is connected to the pharynx through the Eustachian tube which aids in equalizing the pressure.
Inner ear:
Inner ear consists of a membranous labyrinth and a bony labyrinth. Membranous labyrinth is filled with endolymph while the bony labyrinth is filled with perilymph.
- The membranous labyrinth consists of a vestibular apparatus and the cochlea.
It consists of three semicircular canals and vestibule (utricle and saccule). Each semicircular canal lies in a different plane at right angles to each other. The base of the canals is swollen and is known as an ampulla containing crista ampullaris – a projecting ridge which has hair cells.
The utricle and the saccule have a projecting ridge known as macula. The macula and the crista are the particular receptors of the vestibular apparatus that have a role to play in maintaining body balance
Summary:
The organ of corti is located on the basilar membrane of the median canal of the cochlea. It contains sensory hair cells that act as auditory receptors converting the mechanical vibrations into impulses. The impulses are passed on to the brain through the auditory nerve
Final answer:
Option (d)
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