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24 Cards in this Set
- Front
- Back
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auditory tube
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equalizes atmospheric pressure between external ear and middle of ear
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auricle
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acts like a funnel collecting and modifying sound waves
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Cochlea
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holds the organ of corti, the receptor organ for hearing
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external acoustic meatus
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passageway that allows sound to reach tympanic membrane
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stapes, malleus, incus
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combined are oscicles transmit vibrations (soudn) from typmanic membrane to scala vestibuli of the cochlea
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semicircular canal
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contains sensory organs that detect kinetic or dynamic equilibrium
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tectorial membrane
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transmits vibrations to embedded sterocillia of sensory cells
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vestbiliocochlear nerve
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is responsible for transmitting sound and equilibrium (balance) information from the inner ear to the brain
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Cilliary muscle
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contraction allows for tension on suspensory ligaments to lossen allowing the lens to thicken adjusting the focus for the eyes
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Cornea
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the site for light refraction
also protects the anterior eye |
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inferior oblique
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lateral rotation, elevation and abduction of the eye.
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inferior rectus
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depresses, adducts, rotates laterally, and helps extort the eye.
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iris
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controls size of pupil, pupil contracts and dilates in response to light
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lacrimal gland
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produces tears to moisten, lubricate and cleanse the eyes
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lateral rectus
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abducts the eyes
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lens
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used for light refraction
focuses light onto neural retina |
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medial rectus
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adducts the eyes
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optic nerve
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transmits visual information to the brain
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pupil
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an opening that allows light to enter the eyes
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retina
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contains millions of photoreceptors that capture light rays and convert them into electrical impulses.
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rods and cones
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light absorbtion by visual pigment converts signal to action potential in photoreceptor cells
rods non color low light receptors cones color receptors |
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superior oblique
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depression and medial rotation of eye
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superior rectus
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elevation and medial rotation of eye
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vitreous humor
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helps in the refraction of light and maintain intraocular pressure thus keeping the shape of eyeball and holding lens and retina in place
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