Sense Organs The Eye and Ear
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| The eye and the ear are ___________ ________ | SENSE ORGANS
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| Receptors | EYE AND EAR (sense organs)
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| Optic pertains to the _____ | EYE
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| Otic pertains to the __________ | EAR
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| Light rays enter the "central dark opening" of the eye, called __________ | PUPIL
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| The pupil is surrounded by the "colored portion of the eye", called _______ | IRIS
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| Membrane lining the inner surfaces of the eyelids and anterior portion of the eyeball over the white of the eye | CONJUNCTIVA
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| What is clear and almost colorless except when blood vessels are dilated? | CONJUNCTIVA
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| The "BENDING OF LIGHT" | REFRACTION
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| Fibrous, transparent tissue that extends like a dome over the pupil and iris | CORNEA
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| Function of the cornea is to ___________ rays of light. | BEND (REFRACT)
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| Normal healthy cornea has numerous blood vessels. T or F | False, it is AVASCULAR
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| What is the "white of the eye" called? | SCLERA
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| Fibrous layer under the conjunctiva that extends from the cornea on the anterior surface of the eyeball to the optic nerve in the back of the eye | SCLERA
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| Dark brown membrane inside sclera is the ________ that contains many blood vessels that supply nutrients to the eye | CHOROID
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| What contains many blood vessels that supply nutrients to the eye? | CHOROID
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| Pigment-containing area ___________ | IRIS
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| Has a circular opening in the center that forms the pupil | IRIS
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| Muscles of the iris _________ the pupil in BRIGHT light and ________ the pupil in DIM light | CONSTRICT DILATE
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| _______ of the eye is the choroid, iris and ciliary body | UVEA
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| ___________ surrounds the outside of the lens in a circular fashion. | CILIARY BODY
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| Ciliary body will surround and encapsulate the _______ | LENS
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| Adjustment for vision at different distances. or When lens changes its shape. | ACCOMODATION
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| Ciliary body secretes a fluid called ______ _________ which is found in the ____ ______ of the eye. | AQUEOUS HUMOR ANTERIOR CHAMBER (located in front of the eye)
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| __ chamber is a large region "behind" the lens. | VITREOUS
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| Vitreous chamber is filled with a soft, jelly-like material called ____________ ___________ that maintains the shape of the eyeball. | VITREOUS HUMOR (is not supposed to escape)
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| Thin, delicate and sensitive NERVE layer of the eye. | RETINA
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| The retina has ________ and ____________ | RODS CONES
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| Color vision | CONES
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| Black and White vision and responsible for peripheral vision | RODS
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| Where the optic nerve meets the retina is called the ____________ ____________ | OPTIC DISC
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| Does the optic disc have light receptor cells? Y or N | NO
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| When light rays are focused on the retina, a "chemical change" occurs in the rods and cones, initiating nerve impulses that travel from the eye to the brain via the ___________ _____________ | OPTIC NERVE
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| A SMALL, OVAL, YELLOWISH area adjacent to the optic disc | MACULA
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| The macula contains a central depression called the ___________ ___________ | FOVEA CENTRALIS
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| Composed largely of CONES and is the location of the sharpest vision in the eye. | FOVEA CENTRALIS
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| The ___________ of the eye is this POSTERIOR, INNER part that is visualized through the ophthalmoscope. | FUNDUS (in back of eye)
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| ___________ _________ of the brain is responsible for VISION. | OCCIPITAL LOBE
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| AQUE/O | water
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| COR/O | pupil
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| CYCL/O | ciliary body
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| DACRY/O | tears, tear duct
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| KERAT/O | cornea
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| LACRIM/O | tears
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| OCUL/O | eye
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| OPT/O OPTIC/O | eye, vision
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| PALPEBR/O | eyelid
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| PHAC/O PHAK/O | lens of the eye
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| PAPILL/O | optic disc
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| SCLER/O | sclera (white of the eye)
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| VITRE/O | glassy
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| AMBLY/O | dull, dim
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| DIPL/O | double
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| MI/O | smaller, less
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| MYDR/O | widen, enlarge
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| NYCT/O | night
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| PHOT/O | light
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| PRESBY/O | old age
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| SCOT/O | darkness
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| XER/O | dry
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| -OPIA -OPSIA | vision
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| -TROPIA | to turn
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| Defective curvature of the cornea or lens of the eye, kind of shatters | ASTIGMATISM
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| Farsightedness | HYPEROPIA (hypermetropia)
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| Nearsightedness | MYOPIA
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| Impairment of vision due to old age | PRESBYOPIA
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| What part of the ear recieves sound waves? | OUTER EAR
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| What leads from the pinna or auricle? | EXTERNAL AUDITORY MEATUS (auditory canal)
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| Ear wax is called _______ | CERUMEN
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| Located between outer and middle ear | TYMPANIC MEMBRANE (TM)or EARDRUM
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| Tympanic membrane is located in the outer ear? T or F | FALSE It's located BETWEEN the OUTER AND MIDDLE EAR
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| 3 small bones that conduct sound waves through the middle ear are called? | MALLEUS INCUS STAPES
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| 1st Ossicle | MALLEUS
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| 2nd Ossicle | INCUS
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| 3rd Ossicle | STAPES
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| Vascular layer of the eyeball that is continuous with the iris | CHOROID
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| Contains muscles that control the shape of the lens and secretes aqueous humor | CILIARY BODY
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| Membrane that lines the eyelid and anterior portion of the eyeball | CONJUNCTIVA
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| Fibrous layer of clear tissue that extends over the anterior portion of the eyeball | CORNEA
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| colored portion of the eye, surrounds pupil | IRIS
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| Transparent body behind the iris and in front | LENS
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| DARK CENTER of the eye through which light rays will enter | PUPIL
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| Contains sensative cells called RODS and CONES | RETINA
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| Tough, white outer coat of eyeball | SCLERA
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| Jelly-like material behind the lens gives the eyeballs its shape | VITREOUS HUMOR
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| Bending of light | REFRACTION OF LIGHT
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| Adjustment for vision at different distances | ACCOMODATION
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| Loss of vision due to old age | PRESBYOPIA
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| Farsightedness | HYPEROPIA
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| Nearsightedness | MYOPIA
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| Cranial nerve carrying impulses from retina to brain | OPTIC NERVE
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| Opening to inner ear | OVAL WINDOW
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| Auditory tube | EUSTACHIAN TUBE
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| Canal leading from middle ear to pharynx | EUSTACHIAN TUBE OR AUDITORY TUBE
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| Circular, maze-like structure | INNER EAR or LABRINTH
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| Cochlea contains special auditory liquids called_______________ (2) | PERILYMPH ENDOLYMPH
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| contains sensitive auditory receptor area called _____ _ _________ | ORGAN OF CORTI
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| Located in the brain where impulses are interpreted and heard | AUDITORY NERVE FIBERS
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| The _____________ connects the cochlea to 3 semicircular canals for balance | VESTIBULE
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| Semicircular canals contain 2 membranous sacs called | SACCULE UTRICLE they contain endolymph fluid
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| Mesages are sent to ___________ in all parts of the body to ensure that equilibrium is maintained | MUSCLES
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| What is the snail-shaped, spirally wound tube in the inner ear that contains hearing sensitive receptor cells? | COCHLEA
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| In the cerebral cortex what is responsible for hearing? | AUDITORY CENTER
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| Pathway of sound: ______ ______ ______ | OUTER pinna MIDDLE malleus INNER cerebral cortex in the brain (auditory center)
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| ear | AUR/O AURICUL/O
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| eardrum, tympanic membrane | MYRING/O TYMPAN/O
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| eustachian tube or auditory tube | SALPING/O
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| stapes | STAPED/O
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| hearing | -ACUSIS -CUSIS
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| pupil | COR/O
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| ciliary body | CYCL/O
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| ear | AURICUL/O
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| lens of the eye | PHAK/O
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| white of the eye, sclera | SCLER/O
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| glassy | VITRE/O
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| vision | -OPIA -OPSIA
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| to turn | -TROPIA
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| fear | -PHOBIA
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