External Ear
Anatomical term for eardrum
Tympanic Membrane
What bone of the middle ear looks like a mini hammer?
Malleous
Think of mallet, like a hammer
Is there a physical barrier that separates one region fo the inner ear from another?
ex. between the cochlea and the vestibule
No
What structure controls static equilibrium?
Vestibule
Touch, temperature, pain and pressure detection (proprioception) are all examples of what kind of sense?
General Sense
Function of auricle/pinna
Funnel sound waves into the external acoustic meatus
Function of auditory ossicles
Transfer vibrations from the external ear to the inner ear
The cochlea, looks like a spiraled ball, has receptors for what?
Hearing
Definition of equilibrium in terms of the ear
Sense of balance
What do Tactile/Meissner's corpuscles sense?
Light touch; change in shape
What is the shape of the external acoustic meatus described as?
Tubular chamber
Allows for delivery of sound waves to tympanic membrane
What is the function of the stapes bone?
Push on oval window of inner ear to stimulate auditory receptors
The vestibule's function is what?
Stationary/static equilibrium
Is equilibrium a general or special sense? Why?
Special because it is housed in a special organ, the ear.
What do Pacinian/lamellated corpuscles sense?
Deep pressure/vibrations
What do the cells in the ceruminous glands produce?
"Ear wax"
What does the pharyngotympanic/Eustachian tube do?
Equalizes pressure between the external air and the cavity of the middle ear
Does the semicircular canals contain auditory receptors for hearing? If not, what do they do?
No; contain receptors for dynamic equilibrium when the body moves
Definition of otitis media
Inflammation and fluid accumulation in the middle ear typically caused by infection
What is sensory adaptation?
Reduction in sensitivity to a stimulus after constant exposure to it
Function of tympanic membrane
Turns sound waves into vibrations so they can be directed into the bones of the middle ear
The oval window is a membrane covered opening that ...
causes fluid in cochlear region to move creating auditory sensation
What is the function of hair cells in the ear?
To bend and become stimulated so they synapse with sensory neurons in cochlear branch to transmit impulses to auditory cortex of brain
How do you get rid of infections that cause otitis media?
Sometimes go away on own because the immune system takes care of infection
Sometimes requires antibiotic to clear infection
Sam walked into the kitchen and smelt cinnamon rolls cooking in the oven. He thought "Wow! Those smell delicious!". What were the senses used and what was his perception of the sense?
Olfaction (smell); "Wow those smell delicious"