Special Senses Drills Multiple Choice Flashcards
Lacrimal glands are located on which surface of the eye?
Lateral
Which of the external eye muscles is controlled by cranial nerve VI (abducens)?
Lateral rectus
Tough, white connective tissue forms this portion of the fibrous layer of the eye.
Sclera
The gland that produces tears in the eye is called the ___.
Lacrimal gland
The pupil is an opening within the ___.
Iris
Inflammation of the conjunctiva involves ___.
Delicate membrane lining the eyelids and covering the front of the eyeball
Which region of the retina contains only cones and is the sharpest area of visual acuity?
Fovea centralis
The transparent central anterior portion of the sclera through which light enters the eye is called ___.
Cornea
The middle coat of the eyeball that contains pigment which prevents light from scattering in the eyeball is the ___.
Choroid
Which layer of the eye contains rods and cones?
Retina
The pigmented portion of the eye that has a rounded opening through which light passes is the ___.
Iris
The three sets of color receptors within the retina are sensitive to wavelengths of visible light that are ___.
Blue, green, and red
Which area of the retina lacks rods and cones and therefore does not detect images?
Optic disc
The aqueous humor of the eye is reabsorbed into venous blood through the ___.
Canal of Schlemm
Which one of the following is NOT true of color blindness?
It occurs most often in women
The gel-like substance that reinforces the eyeball and prevents it from collapsing inward is the ___.
Vitreous humor
What structure of the eye focuses light on the retina?
Lens
The inability to see distant objects is termed “nearsighted” or ___.
Myopia
Eyes suddenly exposed to bright light experience ___.
Photopupillary reflex
Which one of the following correctly lists the order of the parts through which light passes as it enters the eye?
Cornea, aqueous humor, lens, vitreous humor
Which of the following is NOT associated with the middle ear?
Auricle
Sound waves entering the external auditory canal hit the eardrum, also known as the ___.
Tympanic membrane
Hair cells that function as hearing receptors are located within the ___.
spiral organ of Corti
The pathway of vibrations through the ossicles from the tympanic membrane, or eardrum, to the oval window is ___.
Malleus, incus, stapes
Equilibrium receptors are located in the ___.
Inner ear
An ear infection following an illness such as a cold can pass from the throat through the auditory tube to the ___.
Middle ear
The auditory ossicle called the “anvil” is also called the ___.
Incus
Our sense of static equilibrium is created by the ___.
Movement of otoliths along hair cells
Dynamic equilibrium receptors are found in the ___.
Semicircular canals
Hearing receptors within the spiral organ of Corti are called ___.
Hair cells
Which cranial nerve transmits hearing and equilibrium information to the brain?
Vestibulocochlear nerve (VIII)
Sensorineural deafness occurs when there is damage or degeneration of receptor cells of the ___.
Spiral organ of Corti or cochlear nerve
Gustatory hairs are to taste as olfactory hairs are to ___.
Smell
Which one of the following is NOT a primary taste sensation?
Pungent
Which one of the following nerves serves the anterior tongue?
Facial
Which one of the following cranial nerves is NOT involved in either taste or smell?
Vestibular
Stimulation of sour receptors occurs in response to ___.
Lemons
The congenital condition of “crossed eyes” is also known as ___.
Strabismus
The fusion of ear bones is known as ___.
Otosclerosis
The only special sense that is NOT fully functional at birth is ___.
Vision
Where are the general senses located?
Skin
What nerves carry information about the special senses to the CNS?
Cranial nerves only
How is the sensation of taste affected by a drymouth?
Foods have a less intense taste when the mouth is dry
Which extrinsic eye muscles move the eye inferiorly?
Superior oblique and inferior rectus
What is the function of the lens?
The lens focuses light on the retina
The ability of the lens to change its shape from flattened to round is known as ___.
Accommodation
Twenty-year-old Leslie learned she is hyperopic after having her eyes examined. What best describes her eye condition?
Her eyeballs are too short
Where does each half of the visual field get segregated so that it reaches the opposite hemisphere of the brain?
optic chiasma
True or False: The highest concentration of taste buds is found in filiform papillae.
FALSE. Filiform papillae do not contain taste buds.
True or False: The muscles of the iris and ciliary muscle are considered to be extrinsic eye muscles because they are voluntary.
FALSE. They are involuntary and are considered to be intrinsic eye muscles.
