Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
23 Cards in this Set
- Front
- Back
|
Function of sclera |
protects and supports the eyeball |
|
|
function of cornea |
bends light rays into the eye |
|
|
sides and back of choroid function |
absorbs scattered light and contains blood vessels |
|
|
iris function |
regulates the amount of light that enters the eye |
|
|
pupil function |
the opening for light to enter the inner eye |
|
|
ciliary muscles |
changes the shape of the lens in order to focus light onto the retina |
|
|
rod's function |
photoreceptors that are sensitive to dim light |
|
|
cone's function |
photoreceptors that are sensitive to colour
|
|
|
fovea centralis function |
contains a high density of cones provides acute vision |
|
|
lens |
focuses light onto the fovea centralis |
|
|
vitreous humour is |
liquid behind the lens nourishes eye maintains eye shape (jelly like) |
|
|
Aqueous humor is |
liquid infront of the lens nourishes eye maintains eye shape
|
|
|
optic nerve function |
transmits sensory information to the brain |
|
|
Where does light focus in an eye with hyperopia? |
light rays focus behind the retina when viewing close objects |
|
|
Where does light focus in an eye with myopia |
The rays focus in front of the retina when viewing distant objects |
|
|
The pinna.. |
focuses sound waves into the ear |
|
|
The auditory canal... |
amplifies sound waves (hairs and ear wax live here) |
|
|
sound waves -------the tympanum creating -------- |
hit, vibrations |
|
|
the ossicles |
amplify the vibrations and pass them to the oval window |
|
|
the oval window |
sends the vibrations into the cochlea where they are converted to pressure waves in the fluid |
|
|
Inside the cochlea.. |
mechanical energy of sound is transformed into electrochemical impulses that are transmitted to the brain. |
|
|
The stereocilia |
grows out of a hair cell and the far end is embedded in the tectorial membrane |
|
|
The bending of the stereocilia causes |
a message to be sent to the nerves and then brain |
