Chapter 13: Sensory System
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each of the black spaces below before clicking
on it to display the answer.
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| Involves rods and cones, the retina and Cranial Nerves (CN II) | Sight
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| Involves the organ of corti and Cranial Nerves (CN VIII) | Hearing
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| Is the Olfactory Sense; uses chemorecptors | Smell
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| Uses mechanoreceptors. sensory information transmitted by the vestibular branch of Cranial Nerves (CN VIII) | Balance
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| Gustatory Sensation | Taste
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| From photoreceptors to the occipital lobe | Sight
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| From receptors to auditory cortex | Hearing
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| The layer of the eyeball that contains the photoreceptors | Retina
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| The colored muscle portion of the eye that determines the size of the pupil | Iris
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| The shape of the structure determined by the ciliary muscles; refracts light | Lens
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| Layer of the eyeball that provides the blood supply for the retina | Choroid
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| Secreted by the ciliary body and drained by the canal of schlemm | Aqueous humor
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| Gel-like substance in the posterior cavity; maintains the shape of the eye and helps hold the retina in place | Vitreous humor
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| Contains the radial and circular muscels; mydriasis and miosis | Iris
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| The window of the eye; avascular structure | Cornea
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| Includes the macula lutea | Retina
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| Inner lining of the lids "pink eye" | Conjunctiva
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| Contains the malleus, incus, and stapes | Middle ear
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| Connected to the pharynx by the eustachian tubes | Middle ear
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| Home of cerumen | External ear
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| Location of the organ of corti and Cranial Nerve (CN VIII) | Inner ear
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| Chochlea, semicircular canals, and vestibule | Inner ear
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| Endolymph and perilymph; mechanoreceptors | Inner ear
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| Separated from the middle ear by the tympanic membrane | External ear
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| Separated from the inner ear by the oval window | Middle ear
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| Bone conduction deafness | Middle ear
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| Nerve conduction deafness | Inner ear
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| The retina _________________ | contains rods and cones
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| What is the consequence of diminished blood flow to the choroid? | the retina dies
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| A drug or effect that is described as mydriatic ______________ | dilates pupil
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| Which of the following does not describe the middle ear? | it is the location of the organ corti
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| The organ of corti_______________________ | is the receptor for hearing
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| Touch, pressure, pain, and temperature are _____________________ | classified as general senses
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| Cranial Nerves III, IV, and VI____________________ | innervate the extrinsic eye muscles
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| Which of the following is not a sense? | Lacrimation
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| Which of the following best describes theses structures: superior oblique, inferior oblique, superior rectus, inferior rectus, medial rectus and lateral rectus? | Extrinsic eye muscles
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| Which of the following is least related to the eyelids? | optic nerve
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| Light waves pass through the _____, the avascular extension of the sclera. The light goes through the opening in the iris called___and then through a refracting structure called the ________. | cornea, pupil, lens
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| In daylight, the light waves focus on the ____the area of most acute vision because of the high numbers of ___, the waves are scattered along the periphery of the retina, stimulating the ___ the photoreceptors for color vision. | fovea centralis (macula lutea), cones
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| In dim light,the light waves are scattered along the periphery of the retina, stimulating the _, the photoreceptors for night vision. Action potential(nerve impulses) are formed by the stimulated photorecptors located in the inner layer of the eye, called | rods, retina
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| The nerve impulses travel along the _____ nerve to the ______ lobe of the cerebrum. | optic, occipital
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| Sound waves travel through the external auditory canal and bump into the ___ causing the "drum" to vibrate. The vibration is transmitted to the three tiny ossicles called ___, ____, and _____. | tympanic membrane, mallus (hammer), incus (anvil), and stapes (stirrups)
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| The ___ vibrates against the oval window, causing the fluid within the inner ear to move. The inner ear fluid, called ___, bends the hairlike projections of the receptors, called ___. | cochlear, endolymph, and organ of corti
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| When the hairs are bent, action potentials are fired; the nerve impulses travel the ____ branch of the CN VIII to the ____ love of the cerebrum. | cochlear and temporal
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