Cardiovascular Test
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Semi circular
detect changes in head position and rotational or angular acceleration of the head
Otolith organs (utricle and saccule)
Detect changes in head position and linear acceleration of the head
What is the job of the hair cells?
to detect positioning information of fluid over
What is the blind spot
the optic disc where there are very few rod and cone cell
What is the place where the optic nerves from the right and left side criss-cross?
the optic chiasm
The fluid movement in the ear effects what
the movement of hair cells are therefore the amount of neurotransmitters released
Otolith
calcium carbonate crystals that provide weight to the overlapping hair cells -as the head moves down to otoliths will move down like jello
What does the “round window” do it is a small opening on the semi circular canals
reduced the intensity of sound
What does the “oval window” do
where the vibrations begin in the cochlea
tympanic membrane
vibrates in response to sound waves plus processes loudness and pitch information
amplitude
on the wave graph- how high the wave is; intensity
frequency
on the eave graph-how may waves you have; pitch
ultasound
20000 hz; high frequency; bats use this
infrasound
low frequency; 20 hz; whales use
What re the three bones of the ossicles
malleus-incas-stapes
Where in the cochlea are the hair cells located
cochlear duct
organ of corti
consist of basilar membrane and has thousands of hair cells -one inner row of hair cells transport fluid vibrations into action potentials
tectorial membrane
the membrane on top of the organ of corti
What is interesting about the olfactory neurons
they are the only types of neurons to under go divisions in the adult life