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nwc predictor test

st430 A&P Sensory System

QuestionAnswer
myopia, farsightedness, and astigmatism are errors of refraction
a nocicecptor detects pain
bone conduction occurs in the middle ear
which of the following is not true of the lens? its shape is changed by contraction of the muscles of the iris
bone conduction deafness is most related to the middle ear
what is the name of the specialized area of a sensory neuron that detects a specific stimulus? receptor
the malleus, incus and stapes are called the ossicles
select the word that means the ability of the eyes to refract light without the assistance of correctives lenses emmetropia
which of the following is least related to the retina cornea
photoreceptors detect light
which of the following structures is common to both balance and hearing? mechanoreceptors
what is the name of the tube that connects the pharynx and middle ear? eustachian
the optic disc contains no photoreceptors; it is the blind spot
what does a "choked disc," or papilledema, indicate? increased intracranial pressure
the superior rectus muscle moves the eyeball
the conjunctiva is a mucous membrane
which of the following is most related to the stapes? middle ear ossicle
tactile receptors are activated by touch and pressure
which group is incorrect? errors of refraction: myopia, farsightedness, astigmatism, glaucoma
movement of the oval window: moves the endolymph in the inner ear, thereby bending the mechanoreceptors of the organ of corti
which of the following groups is incorrect? mechanoreceptors: blood concentrations of glucose and H+
which of the following is concerned with the sense of smell? olfaction
which of the following is one of the special senses? balance
the vitreous humor gently pushes the retina against the vascular choroid
pain, proprioception, touch, and pressure are general senses
the fovea centralis and macula lutea are richly populated with cones
the eustachian tube connects the pharynx with which structure? middle ear
vertigo is apt to stimulate the emetic center
which of the following is true regarding the corneal reflex? CN VII is the motor arm of the reflex causing tearing and blinking
the levator palpebrae superioris lifts the eyelids when contracted
the external auditory canal ends at the tympanic membrane
olfraction refers to the sense of smell
the four rectus muscles and two oblique muscles more than one of the above
what is the name of the venous sinuses that drain the aqueous humor? canal of schlemm
pinpoint pupils are caused by the contraction of the circular muscles of the iris
which layer of the eyeball supplies blood to the retina? choroid
a cataract is a cloudy lens
mydriasis refers to pupillary dilation
which of the following is least related to the vestibulocochlear nerve? classified as a motor nerve
what is the condition caused by impaired drainage of aqueous humor through the canal of schlemm that increases intraocular pressure? glaucoma
which of the following is most related to the conjunctiva? is the mucous membrane that forms the inner lining of the eyelids
what happens at the optic chiasm? fibers of the optic nerve cross to the opposite side of the brain
which structure is affected by the contraction and relaxation of the ciliary muscles? lens
the medial canthus and lateral canthus are corners of the eye where the upper and lower eyelids meet
contraction of the orbicularis oculi closes the eye
in which condition is the eyelid not completely raised, thereby making the person appear sleepy? ptosis of the lid
which of the following is not part of the visual pathway? vitreous humor
the gustatory sensation is most related to the taste buds
the optic nerve receives sensory information from the retina
the ciliary muscles change the shape of the lens
the occipital lobe receives sensory information from cranial nerve II
eyelids are described by which of the following? palpebrae and canthi (medial and lateral)
astigmatism, myopia, and hyperopia are or create errors of refraction
which of the following is most related to refraction? lens
the sclera is the outer layer of the eyeball
what is the function of the vestibule and the semicircular canal? balance
which of the following is considered the blind spot? optic disc
which group is incorrect? special senses: hearing, sight, smell, tasted, balance, pain, pressure
the macula lutea, fovea centralis, and photoreceptors are most associated with this structure retina
what is the condition caused by unequal tension exerted by the extrinsic eye muscle? strabismus
what is another name for the tympanic membrane? eardrum
bending of light waves is the function of the lens
the tympanic membrane separates the external ear from the middle ear
which cerebral lobe is concerned primarily with vision? occipital
which of the following occur as an object is moved closer to the eyes? accommodation and convergence
which of the following moves in response to the vibration of the stapes? oval window
which of the following best describes pupillary dilation? mydriasis
the semicircular canals are concerned with balance
these hairlike receptors are located in the cochlea organ of corti
with which word is a drug induced metallic taste and umami most associated? gustatory sensation
which of the following "pupil events" is a true statement? alpha1 activation causes the radial muscle to contract, causing mydriasis
which of the following structures secretes tears? lacrimal gland
the organ of corti contains mechanoreceptors
which of the following has no anatomical connection with the middle ear? endolymph
which of the following is most related to the sense of hearing? organ of corti
the optic nerve carries electrical signals from the retina to the primary visual cortex
which of the following is located in the posterior cavity of the eyeball? vitreous humor
rods are concerned with night vision
which of the following is the best example of referred pain? a person with a history of gallbladder disease eats a high fat meal. she complains of midepigastric pain and pain beneath her right scapula
refracted light should focus on the retina
the receptors for hearing and balance when activated send electrical signals (action potentials) along CN VIII
the choroid contains the blood vessels that nourish the retina
which of the following equipment is used to elicit the photopupillary reflex? penlight
lysozyme, an enzyme with antimicrobial activity, is found in tears
cerumen is found in the external ear
some of the beneficial effects of exercise on the nervous system include all is applicable
retrolental fibroplasia or the retinopathy of prematurity is caused by continuous high doses of oxygen administered in an attempt to relieve hypoxemia
cerumen collects in the outer ear
an increase of intraocular pressure is most likely to cause damage to the retina, leading to blindness
contraction of the radial muscles of the iris causes mydriasis
on its way to the retina light does not pass through this structure choroid
which of the following is true of the cochlea, organ of corti, and CN VIII? all are: concerned with hearing
which ossicle sits in the oval window? stapes
an anticholinergic drug such as atropine dilates the pupil
the colored part of the eye that contains the intrinsic eye muscles, including the circular muscle and the radial muscles, is known as the: iris
which of the following vibrates in direct response to the tympanic membrane? hammer
rhodopsin requires vitamin A
what is the effect of contraction and relaxation of the ciliary muscle? change in the shape of the lens
which of the following words best explains phantom limb pain? projection
which structure separates the outer ear from the middle ear? tympanic membrane
Created by: editsuchan
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