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LOM 17
Sense Organs The Eye and Ear
| Question | Answer |
|---|---|
| The eye and the ear are ___________ ________ | SENSE ORGANS |
| Receptors | EYE AND EAR (sense organs) |
| Optic pertains to the _____ | EYE |
| Otic pertains to the __________ | EAR |
| Light rays enter the "central dark opening" of the eye, called __________ | PUPIL |
| The pupil is surrounded by the "colored portion of the eye", called _______ | IRIS |
| Membrane lining the inner surfaces of the eyelids and anterior portion of the eyeball over the white of the eye | CONJUNCTIVA |
| What is clear and almost colorless except when blood vessels are dilated? | CONJUNCTIVA |
| The "BENDING OF LIGHT" | REFRACTION |
| Fibrous, transparent tissue that extends like a dome over the pupil and iris | CORNEA |
| Function of the cornea is to ___________ rays of light. | BEND (REFRACT) |
| Normal healthy cornea has numerous blood vessels. T or F | False, it is AVASCULAR |
| What is the "white of the eye" called? | SCLERA |
| 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 |
| Dark brown membrane inside sclera is the ________ that contains many blood vessels that supply nutrients to the eye | CHOROID |
| What contains many blood vessels that supply nutrients to the eye? | CHOROID |
| Pigment-containing area ___________ | IRIS |
| Has a circular opening in the center that forms the pupil | IRIS |
| Muscles of the iris _________ the pupil in BRIGHT light and ________ the pupil in DIM light | CONSTRICT DILATE |
| _______ of the eye is the choroid, iris and ciliary body | UVEA |
| ___________ surrounds the outside of the lens in a circular fashion. | CILIARY BODY |
| Ciliary body will surround and encapsulate the _______ | LENS |
| Adjustment for vision at different distances. or When lens changes its shape. | ACCOMODATION |
| Ciliary body secretes a fluid called ______ _________ which is found in the ____ ______ of the eye. | AQUEOUS HUMOR ANTERIOR CHAMBER (located in front of the eye) |
| __ chamber is a large region "behind" the lens. | VITREOUS |
| 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) |
| Thin, delicate and sensitive NERVE layer of the eye. | RETINA |
| The retina has ________ and ____________ | RODS CONES |
| Color vision | CONES |
| Black and White vision and responsible for peripheral vision | RODS |
| Where the optic nerve meets the retina is called the ____________ ____________ | OPTIC DISC |
| Does the optic disc have light receptor cells? Y or N | NO |
| 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 |
| A SMALL, OVAL, YELLOWISH area adjacent to the optic disc | MACULA |
| The macula contains a central depression called the ___________ ___________ | FOVEA CENTRALIS |
| Composed largely of CONES and is the location of the sharpest vision in the eye. | FOVEA CENTRALIS |
| The ___________ of the eye is this POSTERIOR, INNER part that is visualized through the ophthalmoscope. | FUNDUS (in back of eye) |
| ___________ _________ of the brain is responsible for VISION. | OCCIPITAL LOBE |
| AQUE/O | water |
| COR/O | pupil |
| CYCL/O | ciliary body |
| DACRY/O | tears, tear duct |
| KERAT/O | cornea |
| LACRIM/O | tears |
| OCUL/O | eye |
| OPT/O OPTIC/O | eye, vision |
| PALPEBR/O | eyelid |
| PHAC/O PHAK/O | lens of the eye |
| PAPILL/O | optic disc |
| SCLER/O | sclera (white of the eye) |
| VITRE/O | glassy |
| AMBLY/O | dull, dim |
| DIPL/O | double |
| MI/O | smaller, less |
| MYDR/O | widen, enlarge |
| NYCT/O | night |
| PHOT/O | light |
| PRESBY/O | old age |
| SCOT/O | darkness |
| XER/O | dry |
| -OPIA -OPSIA | vision |
| -TROPIA | to turn |
| Defective curvature of the cornea or lens of the eye, kind of shatters | ASTIGMATISM |
| Farsightedness | HYPEROPIA (hypermetropia) |
| Nearsightedness | MYOPIA |
| Impairment of vision due to old age | PRESBYOPIA |
| What part of the ear recieves sound waves? | OUTER EAR |
| What leads from the pinna or auricle? | EXTERNAL AUDITORY MEATUS (auditory canal) |
| Ear wax is called _______ | CERUMEN |
| Located between outer and middle ear | TYMPANIC MEMBRANE (TM)or EARDRUM |
| Tympanic membrane is located in the outer ear? T or F | FALSE It's located BETWEEN the OUTER AND MIDDLE EAR |
| 3 small bones that conduct sound waves through the middle ear are called? | MALLEUS INCUS STAPES |
| 1st Ossicle | MALLEUS |
| 2nd Ossicle | INCUS |
| 3rd Ossicle | STAPES |
| Vascular layer of the eyeball that is continuous with the iris | CHOROID |
| Contains muscles that control the shape of the lens and secretes aqueous humor | CILIARY BODY |
| Membrane that lines the eyelid and anterior portion of the eyeball | CONJUNCTIVA |
| Fibrous layer of clear tissue that extends over the anterior portion of the eyeball | CORNEA |
| colored portion of the eye, surrounds pupil | IRIS |
| Transparent body behind the iris and in front | LENS |
| DARK CENTER of the eye through which light rays will enter | PUPIL |
| Contains sensative cells called RODS and CONES | RETINA |
| Tough, white outer coat of eyeball | SCLERA |
| Jelly-like material behind the lens gives the eyeballs its shape | VITREOUS HUMOR |
| Bending of light | REFRACTION OF LIGHT |
| Adjustment for vision at different distances | ACCOMODATION |
| Loss of vision due to old age | PRESBYOPIA |
| Farsightedness | HYPEROPIA |
| Nearsightedness | MYOPIA |
| Cranial nerve carrying impulses from retina to brain | OPTIC NERVE |
| Opening to inner ear | OVAL WINDOW |
| Auditory tube | EUSTACHIAN TUBE |
| Canal leading from middle ear to pharynx | EUSTACHIAN TUBE OR AUDITORY TUBE |
| Circular, maze-like structure | INNER EAR or LABRINTH |
| Cochlea contains special auditory liquids called_______________ (2) | PERILYMPH ENDOLYMPH |
| contains sensitive auditory receptor area called _____ _ _________ | ORGAN OF CORTI |
| Located in the brain where impulses are interpreted and heard | AUDITORY NERVE FIBERS |
| The _____________ connects the cochlea to 3 semicircular canals for balance | VESTIBULE |
| Semicircular canals contain 2 membranous sacs called | SACCULE UTRICLE they contain endolymph fluid |
| Mesages are sent to ___________ in all parts of the body to ensure that equilibrium is maintained | MUSCLES |
| What is the snail-shaped, spirally wound tube in the inner ear that contains hearing sensitive receptor cells? | COCHLEA |
| In the cerebral cortex what is responsible for hearing? | AUDITORY CENTER |
| Pathway of sound: ______ ______ ______ | OUTER pinna MIDDLE malleus INNER cerebral cortex in the brain (auditory center) |
| ear | AUR/O AURICUL/O |
| eardrum, tympanic membrane | MYRING/O TYMPAN/O |
| eustachian tube or auditory tube | SALPING/O |
| stapes | STAPED/O |
| hearing | -ACUSIS -CUSIS |
| pupil | COR/O |
| ciliary body | CYCL/O |
| ear | AURICUL/O |
| lens of the eye | PHAK/O |
| white of the eye, sclera | SCLER/O |
| glassy | VITRE/O |
| vision | -OPIA -OPSIA |
| to turn | -TROPIA |
| fear | -PHOBIA |
Created by:
kellitb
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