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3.03 Structures of the Sensory System
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3.03 Remember the structures of the sensory system
Essential questions
What are the structures of the sensory system?
3.03 Remember the structures of the sensory system 2
The SensesEyes
SightEars
HearingNose
SmellTongue
TasteSkin
Touch3.03 Remember the structures of the sensory system 3
Eyes
3.03 Remember the structures of the sensory system 4
Structures of the eyesExternal structures
OrbitEyelidsEyelashesConjunctivaLacrimal apparatusExtrinsic muscles
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Structures of the eyesExternal structures
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Structures of eyesExtrinsic muscles
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EyesInternal structures
3.03 Remember the structures of the sensory system 8
Eye TriviaWhich famous
screen actress was noted for her stunning eyes?
Many people thought her irises were violet in color…
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What gives the
iris color?
Structures of the eyesInternal structures
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Structures of the eyesRods and cones
Rods Active in dim light Peripheral vision Do not perceive color
Cones Active in bright light Perceive color
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EyesRevie
w
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Ciliary
bodyconjunctivacornea
iris
retina
choroid
sclera
External eye muscle
lens
pupil
Anterior chamber Optic
nerve
Optic disc(blind spot)
Blood vessels
Name the structures…
Ears
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Structures of the earsExternal earMiddle ear
Also known as the tympanic cavity
Inner earAlso known as
the labyrinth
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Structures of the earsExternal
earPinna or
auricleAuditory
canal or external auditory meatus
Ceruminous glands
Tympanic membrane
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Structures of the earsMiddle ear
Ossiclesmalleusincusstapes
Eustachian tube
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Structures of the earsInner ear
Cochlea Perilymph
fluidSemicircula
r canals Endolymp
h fluidVestibule
chamber
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EarsReview
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pinna
stapesmalleus
Semicircular canal
cochlea
Eustachian tube
Tympanic membrane
anvil
Auditory canal
Name the structures…
Nose
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Structures of the noseNaresNasal ciliaNasal septumOlfactory
receptorsTurbinates
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Structures of the nose
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Structures of the noseOlfactory area
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Tongue
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Structures of the tongueTaste
receptorsAlso known as
gustatory buds or taste buds
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What type of
tissue is
the tongue
made?
Trivia TongueDid you know…
Taste is the weakest of the five sensesWe have almost 10,000 taste buds inside our
mouths; even on the roofs of our mouthsEveryone’s tongue print is different similar to
fingerprints
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Skin
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Structures of the skinEpidermis layerDermis layerSubcutaneous
layer
Touch receptorsTactile corpuscles
located in the skin
Temperature sensors
Pain receptors
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Structures of the sensory system
Did you know…..Our eyes are always the same size from birth, but our nose and ears never stop growing!
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Essential questions
What are the structures of the sensory system?
The End
3.03 Remember the structures of the sensory system 29