66 terms

A & P: Chapter 13: Sensory System

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What is the name of the specialized area of a sensory neuron that detects a specific stimulus?
Receptor
Photoreceptors detect
light.
A nociceptor detects
pain.
Olfactory refers to the sense of
smell.
The gustatory sensation is most related to the
taste buds.
The colored part of the eye that contains the intrinsic eye muscles: the circular muscle and the radial muscles is known as (the)
iris.
Which structure is attached to the lens, causing its shape to be changed?
Suspensory ligaments
Which of the following is least related to the retina?
Cornea
Which cerebral lobe is concerned primarily with vision?
Occipital
Which of the following structures secretes tears?
Lacrimal gland
Which of the following structures is located outside the eye?
Conjunctiva
Rods
are concerned with night vision.
Which layer of the eyeball supplies blood to the retina?
Choroid
The superior rectus muscle
moves the eyeball.
Which of the following is located in the posterior cavity of the eyeball?
Vitreous humor
Which of the following is least related to the optic nerve?
Innervates the extrinsic eye muscles
An increase of intraocular pressure is most likely to cause
damage to the retina, leading to blindness.
The sclera
is the outer layer of the eyeball.
A cataract is a
cloudy lens.
What is the location of the semicircular canals and the cochlea?
Inner ear
The malleus, incus, and stapes are called (the)
ossicles.
Which hairlike receptors are located in the cochlea?
Organ of Corti
What is the name of the tube that connects the pharynx and middle ear?
Eustachian
Which structure separates the outer ear from the middle ear?
Tympanic membrane
Which ossicle sits in the oval window?
Stapes
Bone conduction occurs in the
middle ear.
Cerumen collects in the
outer ear.
Which of the following is least related to the vestibulocochlear nerve?
Classified as a motor nerve
The semicircular canals are concerned with
balance.
Which cerebral lobe is concerned primarily with hearing?
Temporal lobe
What is the condition caused by impaired drainage of aqueous humor through the canal of Schlemm that increases intraocular pressure?
Glaucoma
Rods and cones are called
receptors
What is the condition caused by unequal tension exerted by the extrinsic eye muscles?
Strabismus
What does a "choked disc" indicate?
Increased intracranial pressure
What is the effect of contraction and relaxation of the ciliary muscle?
Change in the shape of the lens
The gel like substance that gently pushes the retina against the choroid and maintains the shape of the eyeball is
vitreous humor.
What is the function of the vestibule and the semicircular canals?
Balance
Which of the following is most related to refraction?
Lens
Which of the following s one of the special senses?
Balance
Which of the following is concerned with the sense of smell?
Olfaction
There is a heavy concentration of cones in which area of the retina?
Fovea centralis
What is the name of the venous sinuses that drains the aqueous humor?
Canal of Schlemm
Which structure is affected by the contraction and relaxation of the ciliary muscles?
Lens
Which of the following is considered the blind spot?
Optic disc
In which condition is the eyelid is not completely raised, thereby making the person appear sleepy?
Ptosis of the lid
Myopia, farsightedness, and astigmatism are
errors of refraction.
Lysozyme, an enzyme with antimicrobial activity, is found in
tears.
The Eustachian tube connects the pharynx (throat) with which structure?
Middle ear
Which of the following is most related to the sense of hearing?
Vestibular nerve
What is another name for the tympanic membrane?
Eardrum
Which ossicle picks up vibrations from the tympanic membrane?
Malleus
Cerumen is
ear wax.
Which of the following is most related to the stapes?
Middle ear ossicle
Th optic nerve
receives sensory information from the retina.
The occipital lobe
receives sensory information from cranial nerve II.
The choroid
contains the blood vessels that nourish the retina.
Tactile receptors are
activated by touch and pressure.
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.
The conjunctiva
is a mucous membrane.
Which of the following best describes pupillary dilation?
Mydriasis
Which of the following equipment is used to elicit the photopupillary reflex?
Penlight
Contraction of the radial muscles of the iris causes
mydriasis.
Pinpoint pupils
are caused by the contraction of the circular muscles of the iris.
Which group is incorrect?
Errors of refraction: myopia, farsightedness, astigmatism, glaucoma
What group is incorrect?
Special senses: hearing,sight, smell, taste, balance, pain, pressure