Exam #1
Glaucoma
"milky" vision
gustatory cells have a ___ life span
7-10 day
Refraction
Bending of light
sensory receptors
Specialized cells unique to each sense organ that respond to a particular form of sensory stimulation.
Proprioceptors
______ include only the somatic sensory receptors within joints, muscles and tendons.
the tympanic cavity is filled with
air
tastes buds are made of gustatory cells, supporting cells, and ____ cells
basal
olfactory receptor cells are ______ neurons
bipolar
earwx is a combination of dead skin cells and ______.
cerumen
what is the largest structure of the vascular tunic?
choroid
the iris is continuous with the ______
ciliary body
nearsightedness
close objects are seen clearly but distant objects appear blurry
cataract
clouding of the lens of the eye
pink eye is also called
conjunctivitis
when light hits the eye, the pupil _____ in bright light or ______
constricts, dilate
the limbus is the junction between the sclera and the ____
cornea
Exteroceptors
cutaneous receptors are a type of ____
Farsightedness
distant objects are seen clearly but close objects appear blurry
receptor specificity
each receptor has a characteristic sensitivity
hyperopia
farsightedness
Where are photoreceptors located?
in the neural layer of the retina
Glaucoma
increased intraocular pressure results in damage to the retina and optic nerve with loss of vision
where are tears created?
lacrimal apparatus
the suspensory ligaments connect the ____ capsule to the ciliary muscles
lens
myopia
nearsightedness
emmetropia
normal vision
olfactory hairs house receptor proteins for detecting ______ specific odorant molecule(s).
one
a lack of photoreceptors in this structure creates the "blind spot"
optic disc
the eyelids are also called
palpebrae
what is the space behind the lens called?
posterior cavity
skin
receptors for general senses are distributed throughout the _____ and viscera.
the ciliary muscles are made of
smooth muscle
Interoceptors
specific types of receptors called ____ detect stimuli in the internal organs.
Which auditory ossicle attaches to the oval window
stapes
general senses
temperature, pain, touch, pressure, vibration, proprioception
cranial nerve II
the optic disc is associated with
visceral
the two types of nociceptors are somatic nociceptors and ________ nociceptors.
special senses
vision, hearing, taste, smell, equilibrium
lens
what structure focuses incoming light onto the retina?
Chemoreceptors
what type of receptor detects molecules dissolved in fluid?
ear, skin
where are mechanoreceptors found?
joints
where are the proprioceptors found?
skin, oral cavity
which structures contain exteroceptors?
mechanoreceptors, thermoreceptors, and chemoreceptors
which terms indicate a receptor type that is classified by its modality of stimulus?