Podcast
Questions and Answers
Which anatomical structure is NOT part of the outer ear?
Which anatomical structure is NOT part of the outer ear?
- Pinna (auricle)
- Malleus (correct)
- External Auditory Meatus
- Tympanic Membrane
What is the primary function of the ossicles located in the middle ear?
What is the primary function of the ossicles located in the middle ear?
- To regulate air pressure within the middle ear cavity
- To transmit and amplify sound vibrations to the inner ear (correct)
- To provide structural support to the tympanic membrane
- To produce endolymph for the inner ear
Which of the following inner ear structures is primarily responsible for balance and spatial orientation?
Which of the following inner ear structures is primarily responsible for balance and spatial orientation?
- Cochlea
- Eustachian Tube
- Organ of Corti
- Semicircular Canals (correct)
The temporal bone provides bony protection for which part of the ear?
The temporal bone provides bony protection for which part of the ear?
Which part of the temporal bone specifically encloses the inner ear?
Which part of the temporal bone specifically encloses the inner ear?
Which of the following structures separates the scala media from the scala tympani within the cochlea?
Which of the following structures separates the scala media from the scala tympani within the cochlea?
What is the main function of the Eustachian tube?
What is the main function of the Eustachian tube?
What is the role of the organ of Corti?
What is the role of the organ of Corti?
The oval window provides the entrance to which structure?
The oval window provides the entrance to which structure?
Which cranial nerve is responsible for transmitting auditory information from the cochlea to the brain?
Which cranial nerve is responsible for transmitting auditory information from the cochlea to the brain?
Which structure is not associated with the vestibular system?
Which structure is not associated with the vestibular system?
Which muscles are involved to dampen the vibrations of the ossicles in the acoustic reflex?
Which muscles are involved to dampen the vibrations of the ossicles in the acoustic reflex?
In the cochlea, which area responds best to high frequencies?
In the cochlea, which area responds best to high frequencies?
Which of the following describes sensorineural hearing loss?
Which of the following describes sensorineural hearing loss?
If someone has damage to their outer hair cells, what impact on hearing will this have?
If someone has damage to their outer hair cells, what impact on hearing will this have?
What is an example of conductive hearing loss?
What is an example of conductive hearing loss?
What type of energy conversion occurs in the middle ear?
What type of energy conversion occurs in the middle ear?
What is the primary function of the pinna (auricle)?
What is the primary function of the pinna (auricle)?
What is the concha of the auricle?
What is the concha of the auricle?
What is the function of the bony labyrinth?
What is the function of the bony labyrinth?
Flashcards
Outer Ear
Outer Ear
The outermost part of the ear, including the pinna and external auditory meatus.
Pinna
Pinna
Also known as the auricle; the visible part of the outer ear.
External Auditory Meatus
External Auditory Meatus
Also known as the ear canal; leads from the outer ear to the tympanic membrane.
Tympanic Membrane
Tympanic Membrane
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Middle Ear
Middle Ear
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Ossicles
Ossicles
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Tympanic Muscles
Tympanic Muscles
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Oval Window
Oval Window
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Round Window
Round Window
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Eustachian Tube
Eustachian Tube
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Inner Ear
Inner Ear
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Cochlea
Cochlea
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Semicircular Canal
Semicircular Canal
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Vestibular System
Vestibular System
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Bony Labyrinth
Bony Labyrinth
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Temporal Bone
Temporal Bone
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Petrous Part
Petrous Part
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Organ of Corti
Organ of Corti
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Basilar Membrane
Basilar Membrane
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Auditory Nerve
Auditory Nerve
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Study Notes
- Structures of the ear are divided into the outer, middle, and inner ear
Outer Ear
- Pinna (auricle) is part of the outer ear
- External Auditory Meatus is part of the outer ear
- Tympanic Membrane is part of the outer ear
Middle Ear
- Ossicles (Malleus, Incus, Stapes) are part of the middle ear
- Stapedius and Tensor Tympani are tympanic muscles in the middle ear
- Oval Window is in the middle ear
- Round Window is in the middle ear
- Eustachian Tube (Auditory Tube) is in the middle ear
Inner Ear
- Cochlea is part of the inner ear
- Semicircular Canal is part of the inner ear
- Vestibular system is part of the inner ear
- Bony labyrinth is part of the inner ear
- The temporal bone houses the middle and inner ear
- Petrous part of the temporal bone encloses the inner ear
- Ossicle bones (malleus, incus, stapes) are in the middle ear
- Pinna/Auricle parts include the helix, lobule, concha, and tragus
- Cochlea includes the Organ of Corti, oval window, round window, and basilar membrane
- Organ of Corti is located in the cochlea
- Oval window allows entrance to the cochlea
- Round Window is part of the cochlea
- Basilar membrane separates the scala media from the scala tympani
- Two muscles involved in the acoustic reflex
- Structures are associated with the vestibular system
- CN VIII Auditory Nerve is part of the ear
- Outer, middle, and inner ear each have primary functions
- Energy is converted in each part of the ear
- Muscles are involved in the acoustic reflex
- Acoustic reflex is the function of the muscles on the ossicles, affecting the amplitude of sound transmitted
- Basilar membrane and hair cells are ordered within the cochlea for specific frequencies
- Base hair cells are responsive to high frequencies
- Apex hair cells are responsive to low frequencies
- Hearing loss types include conductive, sensorineural, and mixed
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