SPECIAL SENSES
HEARING
- Sense of hearing and equilibrium
MECHANORECEPTORS
- Detect sound waves (touch & hearing)
OUTER EAR
PINNA | AURICLE
- The only visible part of the ear with its special helical shape
EXTERNAL AUDITORY CANAL | EXTERNAL ACOUSTIC MEATUS
- A tube running from the outer ear to the middle ear
TYMPANIC MEMBRANE
- Thin, cone-shaped membrane that separates the external ear from the middle ear
MIDDLE EAR
TYMPANIC CAVITY
- An air chamber
- It contains a chain of movable bones which transmits the vibrations of the tympanic
membrane across the cavity to the middle ear
MASTOID ANTRUM | TYMPANIC ANTRUM
- An airspace in the petrous portion of the temporal bone
AUDITORY TUBE | EUSTACHIAN TUBE
- Equalizes the pressure between the outer and inner ear
1|Special senses
, - Methods we use when we feel pressure inside our ear: swallowing yawning, and
chewing (happens here)
AUDITORY OSSICLES
1. MALLEUS | HAMMES
- Transmits sound vibrations from the eardrums to the incus
2. INCUS | ANVIL
- The middle bone; connects to the malleus and to the stapes
3. STAPES | STIRRUP
- Transmits sound vibrations from the incus to the oval window
- It connects middle ear to the inner ear
INNER EAR
COCHLEA
- Receives sounds in the form of vibrations
- Transforms vibrations of the cochlear liquids and associated structures into a neural
signals
- Organ of hearing
VESTIBULE
- Detect changes in gravity and linear accelerations
- Responsible in balance
- Contains utricle and saccule
1. UTRICLE
- Changes in velocity when traveling (horizontal & vertical)
2. SACCULE
- Acceleration & Deceleration
A. OVAL WINDOW | VESTIBULAR WINDOW
- Transmits the vibrations to the inner ear
B. ROUND WINDOW | COCHLOEAR WINDOW
SEMICIRCULAR CANALS (ANTERIOR, POSTERIOR, LATERAL)
- Helps maintain balance when turning spinning, or tumbling
- Fluid filled tubes in your inner ear that helps you keep your balance
! FLUIDS IN THE EAR
2|Special senses
HEARING
- Sense of hearing and equilibrium
MECHANORECEPTORS
- Detect sound waves (touch & hearing)
OUTER EAR
PINNA | AURICLE
- The only visible part of the ear with its special helical shape
EXTERNAL AUDITORY CANAL | EXTERNAL ACOUSTIC MEATUS
- A tube running from the outer ear to the middle ear
TYMPANIC MEMBRANE
- Thin, cone-shaped membrane that separates the external ear from the middle ear
MIDDLE EAR
TYMPANIC CAVITY
- An air chamber
- It contains a chain of movable bones which transmits the vibrations of the tympanic
membrane across the cavity to the middle ear
MASTOID ANTRUM | TYMPANIC ANTRUM
- An airspace in the petrous portion of the temporal bone
AUDITORY TUBE | EUSTACHIAN TUBE
- Equalizes the pressure between the outer and inner ear
1|Special senses
, - Methods we use when we feel pressure inside our ear: swallowing yawning, and
chewing (happens here)
AUDITORY OSSICLES
1. MALLEUS | HAMMES
- Transmits sound vibrations from the eardrums to the incus
2. INCUS | ANVIL
- The middle bone; connects to the malleus and to the stapes
3. STAPES | STIRRUP
- Transmits sound vibrations from the incus to the oval window
- It connects middle ear to the inner ear
INNER EAR
COCHLEA
- Receives sounds in the form of vibrations
- Transforms vibrations of the cochlear liquids and associated structures into a neural
signals
- Organ of hearing
VESTIBULE
- Detect changes in gravity and linear accelerations
- Responsible in balance
- Contains utricle and saccule
1. UTRICLE
- Changes in velocity when traveling (horizontal & vertical)
2. SACCULE
- Acceleration & Deceleration
A. OVAL WINDOW | VESTIBULAR WINDOW
- Transmits the vibrations to the inner ear
B. ROUND WINDOW | COCHLOEAR WINDOW
SEMICIRCULAR CANALS (ANTERIOR, POSTERIOR, LATERAL)
- Helps maintain balance when turning spinning, or tumbling
- Fluid filled tubes in your inner ear that helps you keep your balance
! FLUIDS IN THE EAR
2|Special senses
