Outer Ear
Middle Ear
Inner Ear
Sharks/Finfish
Labyrinthitis
100
What is the structure that most humans (incorrectly) identify as *the ear*?
Pinna
100
What are the three tiny bones in the middle ear called? (Latin or regular)
Malleus, incus, stapes or anvil, stirrup, hammer
100
What is the snail-shaped structure in the inner ear?
The cochlea.
100
What are the electroreceptors that give the shark its "sixth sense" called?
Ampullae of Lorenzini
100
What is labyrinthitis?
The inflammation of the inner ear.
200
What does the pinna's funnel-shaped center primarily do?
Amplify incoming sound waves.
200
The ossicles can fit inside which US coin?
A dime.
200
Hair cells are located in the __________.
Organ of Corti
200
Finfish have ____ pairs of otolths.
three
200
Tinnitus is the ______-like sound heard in the ears. It is a symptom of labyrinthitis
ringing
300
Name one of the fortifications the ear canal has to protect itself from injury. Hint: I mentioned 4.
Rigid walls/self-cleaning function/complex arrangment of hair cells/cerumen (earwax)
300
How many muscles are there in the middle ear? Name them.
Stapedius and tensor tympani.
300
The system that contributes to our sense of balance and spatial orientation is called the ______ system.
Vestibular
300
Not only do the Ampullae of Lorenzini give sharks the ability to sense electromagnetic fields, but it also lets them sense ______ gradients.
temperature
300
What system is the main target of labyrinthitis?
Vestibular system.
400
What is the scientific name of for the eardrum? Also, the vibrations from sound waves are transmitted from the eardrum to what structure?
Tympanic Membrane, Ossicles
400
Why do kids have more ear infections? Hint: It has to do with the structure that connects the middle ear to the nasopharynx.
Their Eustachan tube is shorter, making the movement of fluid and air harder.
400
As the water-like substance in the cochlea moves, hair cells "activate", transforming the energy from the motion to _____ potentials.
Electrical.
400
Name any of the three locations of the otolith.
Behind the eyes, in the semicircular canals.
400
Pressure changes experienced while diving is one of the ways to get labyrinthitis. Name three more.
Alcohol abuse Injury of the ear Allergies High doses of meds.
500
The ear canal has a volume of roughly: a)318.5mm b)265.3mm c)783.4mm d)424.24mm
a. 318.5mm
500
Name the functions of the tensor tympani muscle or the stapedius muscle.
Reduces sound emitted from chewing/stabilizes the stapes
500
What is the complex pattern of sound reception known as?
Tonotopy.
500
What are the names of the three pairs of otoliths? Name at least two.
Sagittae, lapilli, and asterisci.
500
Labyrinthitis sends messed up signals to the vestibulo-____ reflex, resulting in unwanted eye movement.
ocular
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