structures of the sensory system

3.03 Remember the structures of the sensory system

Essential questions

What are the structures of the sensory system?

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The SensesEyes

SightEars

HearingNose

SmellTongue

TasteSkin

Touch3.03 Remember the structures of the sensory system 3

Eyes

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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

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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

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