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57 Cards in this Set
- Front
- Back
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Name the component of the eye that is a transparent continuation of the eyelid.
page 403 |
Conjunctiva
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Name the focusing component of the eye.
page 403 |
Lens
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Name the outer layer component of the eye that consists of the sclera and the cornea.
page 403 |
Fibrous tunic
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What part of the eye has the following attributes:
a) White b) Dense irregular CT c) Gives shape to the eye d) Site for mm attachment page 403 |
Sclera
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Name 4 attributes about the sclera.
page 403 |
1) White part of the eye
2) Made of dense irregular CT 3) Gives shape to the eye 4) Site of mm attachment |
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What are the 2 components of the Fibrous tunic?
page 403 |
Sclera
Cornea |
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What part of the eye has the following attributes:
a) Gathers light b) Provides 170* of peripheral vision c) Not very vascular d) Dense irregular CT page 403 |
Cornea
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Name 4 attributes of the cornea.
page 403 |
1) Gathers light
2) Provides 170* of peripheral vision 3) Not very vascular 4) Dense irregular CT |
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What is another word for "Receives light" ?
page 40 |
Telereception
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What is the name of the point on the retina where color receptors are located?
page 403 |
Fovea
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What are the 3 components of the Vascular tunic?
page 404 |
Choroid coat
Ciliary body Iris |
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What is the name of the vascular loose connective tissue that distributes blood vessels to the tissues of the eye?
page 404 |
Choroid coat
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What are the 2 components of the Ciliary body?
page 404 |
Ciliary muscle
Zonular fibers |
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What is the name of the smooth muscle ring that surrounds the lens and has a sphincter function?
page 404 |
Ciliary muscle
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What is the function of the ciliary muscle?
page 404 |
Assists in the focusing of the lens
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What is the name of the slender finbers that attach the ciliary muscle to the equator of the lens?
page 404 |
Zonular fibers
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Describe what happens to allow for far away vision.
page 404 |
1) Ciliary muscle relaxes
2) Causes zonular fibers to become taut 3) Causes lens to be pulled and thus flattened |
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Describe what happens to allow for close up vision.
page 404 |
1) Ciliary muscle contracts
2) Causes zonular fibers to become lax 3) Causes lens to return to natural rounded shape |
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Name the component of the eye that controls how much light enters the eye, and determines eye color.
page 404 |
Iris
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What is the function of the Iris?
page 404 |
1) Controls how much light can enter the eye
2) Provides eye color |
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What is the pupil?
page 405 |
The opening in the center of the iris, through which light passes.
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The Sphincter pupillae muscle is controlled by:
a) Sympathetic nervous system b) Parasympathetic nervous system page 405 |
b) Parasympathetic
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The Dialator pupillae muscle is controlled by:
a) Sympathetic nervous system b) Parasympathetic nervous system page 405 |
a) Sympathetic
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Name the 2 muscles of the iris.
page 405 |
Sphincter pupillae
Dialator pupillae |
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What is the function of the sphincter pupillae muscle?
page 405 |
Upon contraction, decreases the size of the pupil to reduce the amount of light that can pass through.
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What is the function of the dialator pupillae muscle?
page 405 |
Upon contraction, increases the size of the pupil to increase the amount of light that can pass through.
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Name the 3 tunics of the eye.
pages 403-406 |
Fibrous Tunic
Vascular Tunic Internal Tunic |
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What is another name for the Internal tunic of the eye?
page 406 |
Retina
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What is another name for the Retina?
page 406 |
Internal tunic
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Name the 2 types of photoreceptors found in the retina.
page 406 |
Rods
Cones |
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What is the function of the rods of the retina?
page 406 |
Respond to non color low intensity light.
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About how many rods are found within the retina of each eye?
page 406 |
90 million/eye
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How many photons of light are required to stimulate one rod in the retina?
page 406 |
1 photon
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What is the function of the cones of the retina?
page 406 |
Respond to color high intensity light.
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About how many cones are found within the retina of each eye?
page 406 |
4.5 million/eye
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How many photons of light are required to stimulate one cone in the retina?
page 406 |
100 photons
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About how many colors can be discerned by the eye?
page 406 |
10 million different colors
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What is the proportion and color sensitivity of the cones of the retina?
page 406 |
1/3 red
1/3 blue 1/3 green |
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What is the "optic charm" ?
page 406 |
Blindspot
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What is another word for "Sound reception" ?
page 406 |
Hearing
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What is another word for "Equilibrium" ?
page 406 |
Balance
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What are the 3 divisions of the ear?
page 406 |
External ear
Middle ear Inner ear |
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What is the function of the external ear?
page 406 |
Gather sound and carry it to the middle ear.
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What is the function of the middle ear?
page 406 |
Amplify sound
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What is the function of the inner ear?
page 406 |
Fluid filled chamber for hearing & balance
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What is the air-filled cavity within the temporal bone of the middle ear.
page 406 |
Tympanic cavity
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What is the membrane that separates the external from the middle ear.
page 407 |
Tympanic membrane
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What is the oval window through which sound travels to the inner ear?
page 407 |
Fenestra vestibuli
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What is the round window through which sound travels out of the inner ear?
page 407 |
Fenestra cochlea
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What is the passageway that connects the middle ear to the throat?
page 407 |
Pharyngotympanic or auditory tube
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Name the bones of the middle ear?
page 408 |
Malleus
Incus Stapes |
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Name the two musles of the middle ear?
page 408 |
Tensor tympani
Stapedius |
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What is the space within the inner ear that contains the auditory structures.
page 409 |
Osseous labyrinth
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What fills the Osseous labyrinth?
page 409 |
Membranous labyrinth
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What is the name of the fluid that exists in the osseous labyrinth that suspends the membranous labyrinth?
page 409 |
Perilymph
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What is the name of the fluid that fills the membranous labyrinth?
page 409 |
Endolymph
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Where is sound converted to afferent sensory signals?
page 410 |
Membranous part of the cochlea
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