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