sensory system
the eye is set for distance vision (over how many feet away)
20
What percent of body sensory receptors are found in the eyes?
70%
how does an image appear on the retina after it has passed through the lens? -reversed -upside down -smaller -all of the above
all of the above
where are taste buds located? -on the tongue -soft palate -cheeks -all of the above
all of the above
Which of the following is not an accessory structure of the eye? -eyelids -eyelashes -tarsal glands -all of the above are
all of the above are
which is not a type of papillae? -filiform -fungiform -circumvallate -all of the above are
all of the above are
which of the following is an area of the ear? -outer -middle -inner -all of the above are areas of the ear
all of the above are areas of the ear
all of the following are tunics that compose the wall of the eye except -sensory -choroid -fibrous -all of the above are tunics
all of the above are tunices
all of the following are tunics that compose the wall of the eye except -allow for light to pass through -repair itself bc its easily damaged -most exposed part of the eye -allow for detailed color vision
allow for detailed color vision
Fluid that fills the anterior (front) chamber of the eye
aqueous humor
the nerve that transmits nerve impulses from the cochlea to the brain
auditory nerve
the smallest bones in the body. they transmit sound vibrations across the middle ear
auditory ossicles
area of the retina that lacks rods and cones
blind spot
coating that provides nutrients to eye. becomes the iris in the front of the eye
choroid
heavily pigmented coating that prevents light scattering within the eyeball: reflects light in nocturnal animals
choroid
sound vibrations are converted here into electrical impulses
cochlea
which of the following is not a sense we have for our bodies? -hearing -equilibrium -taste -common
common
the delicate membrane that covers the front of the eyeball
conjunctiva
most anterior part of the sclera - the window on to the world
cornea
this canal can harbor mites in cats and dogs
ear canal
connects the pharynx (throat) and the middle ear to keep the air pressures equal
eustachian tube
true or false: at birth, babies are near-sighted because their eyeballs are too large
false
true or false: color blindness is caused by excess cones
false
true or false: dynamic equilibrium is referring to straight line movements of the head and means "at rest"
false
true or false: glaucoma is an eye disorder that effects young people more often than the elderly
false
true or false: human has monocular vision, which allow us to have depth perception and see things in three dimensions.
false
true or false: internal eye muscles are controlled by the somatic, not autonomic, nervous system
false
true or false: the pupil is the pigmented layer that gives the eye color
false
how many taste receptors do we have?
five (sweet, sour, bitter, salty, umami)
area of the retina of most detailed vision
fovea
Which of the following is not a function of lacrimal fluid to the eye -protect -heal -moisten -lubricate
heal
the part of the ear consisting of the cochlea and the vestibular organ
inner ear
colored structure that controls the size of the pupil
iris
which of the following structures do not contain photoreceptors -iris -rods -cones -all of the above contain photoreceptors
iris
the part of the ear that contains the ear (auditory) ossicles
middle ear
the third eyelid
nictitating membrane
the nerve that takes nerve impulses from the retina to the brain
optic nerve
animals can turn this towards the direction of the sound
pinna
aperture of the eye. where the light enters
pupil
bright light causes what to constrict
pupil
layer containing the rods and cones
retina
outer coating of tough, fibrous connective tissue
sclera
the white of the eye
sclera
what two senses complement each other the best
taste and smell
how many tunics, or coats, compose the wall of the eye
three
there are how many types of cones for vision?
three
which of the following senses is not housed in the ear? -hearing -equilibrium -touch -all of the above are found in the ear
touch
true or false: all special senses are functional at birth, except vision because years of "learning" are still needed
true
true or false: bitter taste receptors help protect us from ingesting poisons and spoiled foods
true
true or false: cataracts occurs when the lens becomes increasingly hard and opaque
true
true or false: earwax is produced in the ceruminous glands of the outer ear.
true
true or false: fibers of each eye cross at the optic chiasma before they connect to the thalamus in the brain?
true
true or false: only 1/6 of the eyes surface is actually exposed
true
true or false: presbyopia is an eye condition that basically causes far-sightedness in elderly people
true
true or false: the sclera is seen as "the white of the eye" and found in the fibrous tunic
true
true or false: viewing very close objects causes convergence ( cross-eyed effect)
true
how many functional parts does equilibrium have?
two (static and dynamic)
vibrates as sound waves hit it. transmits these vibrations to the auditory ossicles
tympanic membrane
contains receptors for the sense of balance and movement
vestibular organ
jelly-like substance filling the posterior cavity of the eyeball
vitreous humor