Senses and Ear Flashcards
Name the 5 SPECIAL SENSES.
What are “unicate fits”.
Scientists who are trying to find a way to
make neurons divide to heal nerve injuries
often study the body’s only mitotic neurons.
These neurons are?
Smell, taste, vision, hearing, and equilibrium
(balance) are SPECIAL SENSES
People who experience imaginary odors have
what are called “unicate fits”.
Olfactory receptors.
What could cause a person to be unable to
easily taste sweet, sour, or salty substances?
Someone with a damaged facial nerve cannot
easily taste sweet, sour, or salty substances.
(Taste buds are the only part of the nervous
system that can regenerate completely).
The primary gustatory (taste) cortex is located The primary gustatory (taste) cortex is located
in which lobe of the brain?
in the parietal lobe of the brain.
Name the 3 parts of the Ear and its 3
functions?
Parts
1. OUTER EAR
2. MIDDLE EAR
3. INNER EAR
Functions
1. Hearing
2. Balance
3. Equilibrium
The OUTER EAR consists of 2 parts. What are
they?
1. The PINNA
2. EXTERNAL AUDITORY CANAL
What is the PINNA made up of and what is its The pinna is the cartilage of the ear; it acts as
function?
a funnel to capture the sound.
Transmission of sound vibrations through the Air.
OUTER EAR occurs through what substance?
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Senses and Ear Flashcards
What is the middle ear normally filled with?
Air.
The middle ear is open to the nasopharynx
by way of what structure and what is its
function?
AUDITORY TUBE
The function of the auditory tube is to
equalize the pressure of the middle ear and
the outside air, so the ear bones can vibrate.
What 3 bones are attached to the tympanic
membrane and what is their function?
1. MALLEUS (hammer). The malleus
vibrates the incus
2. INCUS (anvil). Vibrates the stapes
3. STAPES (stirrup). Their function is to
amplify sound vibrations.
The INNER EAR is in what portion of the
skull?
Bony Labyrinth is filled with what fluid?
The temporal bone (petrious portion).
What fluid is in the MEMBRANOUS
LABYRINTH?
What structure contains receptors for
hearing?
ENDOLYMPH.
What 3 structures are responsible for
balance?
1. Semicircular Canals
2. Utricle
3. Saccule
Bony Labyrinth is filled with PERILYMPH
COCHLEA
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Senses and Ear Flashcards
A
F
G
H
B
B
C
E
Answer key located to the right for the
above picture shown
A.
B.
C.
D.
E.
F.
G.
H.
D
Semicircular Canals
Superior
Posterior
Lateral
Stapes
Cochlea
Vestibulocochle ar nerve
Saccule
Utricle
Where are hair cells found?
Cochlea and Semicircular Canals
Hair cells are receptor cells for what 2
things?
What cranial nerve carries information for
hearing?
What is the stapes is attached to?
What structure determines movement in
three planes?
Hearing and equilibrium
CN VIII VESTIBULAR COCHLEAR NERVE
OVAL WINDOW
SEMI-CIRCULAR CANALS
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Senses and Ear Flashcards
What are the two joined structures attached
to the semi-circular canals?
What type of fluid and what receptors are
within each semi-circular canal?
What are calcium deposits in the inner ear
called?
They are an essential part of the utricle and
saccule for what purpose?
How is the Otoliths play an essential process
in stimulating the hair cells?
What is VERTIGO or LABYRINTHITIS?
UTRICLE and the SACCULE.
Endolymph and hair cells.
OTOLITHS (“ear rocks”).
Equilibrium
It allows the hair cells in this region to act as
receptors by telling you what position your
head is in and provide you a sense of
equilibrium.
Inflammation of the semi-circular canals that
give a sense of motion when you’re not
moving. This can be debilitating.
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