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62 Cards in this Set
- Front
- Back
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What are the __ classes of senses
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2
General Special |
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What are the __ General Senses
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5
Temperature Pain touch stretch pressure |
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What are the __ Special senses
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5
Gustation(taste) olfaction vision equilibrium audition |
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what are the different types of receptors
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Chemoreceptors, thermoreceptors, photoreceptors, mechanoreceptors, baroreceptors, nociceptors
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what is a chemoreceptors
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detects chemicals
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what is a thremoreceptor
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dectects temperature changes
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what is a photoreceptor
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detects light
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mechanoreceptor
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detects touch,mechanical movement
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what is a barorecetor
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detects pressure changes
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what is nociceptor
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pain receptor
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gustation - what sensory cell, type of receptor, cranial nerve
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gustatory cell
chemoreceptor 7 and 9 |
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olfaction - what sensory cell, type of receptor, cranial nerve
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olfactory neuron
chemoreceptor 1 |
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vision - what sensory cell, type of receptor, cranial nerve
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rods and cones
phoreceptors 2 |
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audition - what sensory cell, type of receptor, cranial nerve
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cochlear hair cells
mechanoreceptors 8 |
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equilibrium - what sensory cell, type of receptor, cranial nerve
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hair cells
mechanoreceptors 8 |
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where are the tactile receptors for the general senses located
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Dermis and hypodermis
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what are the characteristics of the filiform papillae
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anterior 2/3 tongue, no taste buds
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what are the characteristics of the the fungiform papillae
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tip and sides of tongue, few taste buds
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what are the characteristics of the circumvallate papillae
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back of tongue, largest
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what are the characteristics of the foliate papillae
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lateral tongue, taste buds during infancy
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how often are gustatory cells replaced
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7-10 days
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what are the five flavors the tongue can snese
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salty
sweet sour bitter umami (savory) |
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the tongue is innervated by which two cranial nerves and which section is innervated by each
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facial nerve 7 - anterior 2/3 of tongue
glossopharyngeal nerve 9 - posterior 2/3 of tongue |
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what are the characteristics of the olfactory neurons
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chemoreceptors, bipolar
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how many different chemical stimuli can be recognized in olfaction's
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thousands
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olfaction slide
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what are the accessory structures of the eye
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conjuctiva
eybrows, eyelashes and palpebrae lacrimal system tarsal glands |
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what is the function of the conjuctiva
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Covers eye’s anterior surface and internal eyelid surface
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what is the function of the eyebrows,eyelashes and palpebrae
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Prevent foreign objects from contacting the eye
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what are the steps of the lacrimal system
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lacrimal glands
canaliculi, sac duct) |
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what are the structures of the eye?
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Lens
Pupil Anterior chamber Posterior chamber Vitreous chamber Optic nerve |
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the anterior and posterior chamber of the eye are filled with.....
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aqueous humor
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the viteous chamber of the eye is filled with .....
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vitreous humor
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what are the causes of cataracts
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Aging
Diabetes UV exposure Glaucoma Eye infections |
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what is a cataract
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lens becomes opaque
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what is the treatment for a cataract
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artificial lens
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what are the different layers of the eye
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Fibrous tunic
-Sclera -Cornea Vascular tunic -Choroid -Ciliary body -Suspensory ligaments -Iris Neural tunic -Retina -photoreceptors |
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what is the anatomy of the posterior eye
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what is the function of rods in the eye
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function in dim light, don’t provide sharp vision or color vision, more numerous than cones
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what is the function of cones in the eye
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operate best in bright light, provide high acuity color vision
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close up of choroid and retina
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what are the ___ retinal regions
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3
macula lutea fovea centralis optic disc |
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does the macula lute contain mostly discs or cones
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cones
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does the fovea centralism contain discs or cons
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only cones - maximal acuity
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what is the function of the optic disc
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contains no rods or cones, axons exit eye, blind spot
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Picture of retinal regions
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macular degeneration.....
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retina starts to separated from choroid causing vision loss in center of vision
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what has developed by week four in they eye by early week 4
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optic cup and lens pit
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what has developed by week four in they eye by late week 4
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lens vesicle
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by week __ the lens of the eye has developed
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6
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the optic cup is an outgrowth of the ......
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diencephalon
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the lens pit forms from .....
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ectoderm
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what are the structures of the external ear
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auricle
external acoustic meatus ceruminous glands produce cerumen earwax impedes microorganism growth tympanic membrane |
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what are the structures of the middle ear
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auditory ossicles
malleus incus stapes stapedius muscle tensor tympani muscle round window auditory tube |
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what is the technical term for a middle ear infection
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otitis media
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why are ear infections mor common in children than adults
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auditory tubes are more horizontal making it easier for bacteria to migrate into the middle ear
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what are the structures of the inner ear
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vestibule
semicircular canals cochlea vestibular and cochlear nerves |
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what is the function of the vestibule
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Utricle and saccule
Detects acceleration and deceleration Helps sense equilibrium |
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what is the function of the semicircular canals
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Detect rotational movements
Help sense equilibrium |
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what is the function of the cochlea
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senses audition
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how does sound makes it way through the cochlea
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how does a cochlear implant work
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Electrical impulses
from the transmitter are relayed through the lead and stimulate the cochlear nerve directly adjacent to the cochlea. |
