3.03 Remember the structures of the sensory system

3.03 Remember the structures of the sensory system

3.03 Remember the structures of the sensory systemEssential questionsWhat are the structures of the sensory system?3.03 Remember the structures of the sensory system2The SensesEyesSightEarsHearingNoseSmellTongueTasteSkinTouch

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Eyes

3.03 Remember the structures of the sensory system4ProtectionThe eye is protected by the orbital socket of the skull, eyelids, the eyebrows and eye lashesThe protective membrane over the eye is the conjunctivaWhen we blink, the eyes are constantly bathed in fluid secreted by the lacrimal glands.The tears contain lysozymes which help combat bacterial infectionsThe eye is made of up 3 layers: Sclera, choroid and retina3.03 Remember the structures of the sensory system5QuestionName the disorder that is inflammation of the membrane that lines the eyesometimes called Pink Eye3.03 Remember the structures of the sensory system6AnswerConjunctivitis3.03 Remember the structures of the sensory system7ScleraThe outermost layerThe white of the eyeMaintains the shape of the eye and protects the structures withinThe muscles that move the eye are the extrinsic musclesOn the anterior portion of the eyeball it forms the cornea3.03 Remember the structures of the sensory system8Question

What is known as the window of the eye?A. IrisB. RetinaC. CorneaD. Sclera3.03 Remember the structures of the sensory system9AnswerCornea3.03 Remember the structures of the sensory system10ChoroidThe middle layerContains the iris and the pupilThe iris is the colored portion of the eyeThe pupil is the opening that allows for light to enter3.03 Remember the structures of the sensory system11QuestionWhat is the colored portion of the eye?A. LensB. RetinaC. IrisD. Sclera3.03 Remember the structures of the sensory system12AnswerIris3.03 Remember the structures of the sensory system13RetinaThe innermost layerContains the nerve endings that join to the optic nerveContains two types of light sensing receptors-rods and conesEach eye contains millions of receptors: 100 million rods and 3 million cones3.03 Remember the structures of the sensory system14Detached RetinaShaken Baby finding

3.03 Remember the structures of the sensory system15Diabetic RetinopathyCan be caused by hypertension ( BP ) or Diabetes

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QuestionWhat structure contains the optic disc?A. corneaB. lensC. retinaD. sclera3.03 Remember the structures of the sensory system17AnswerRetina3.03 Remember the structures of the sensory system18GlaucomaIncreased pressure in the fluid of the eye which interferes with optic nerve function and vision gradually deteriorates

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Structures of the eyesRods and conesRods Active in dim lightDo not perceive colorConesActive in bright lightPerceive color

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QuestionIf someone is colorblind what structure is impaired?A. ConesB. Optic NerveC. Optoc DiscD. Rods3.03 Remember the structures of the sensory system21QuestionIf someone has trouble driving at night what structure is impaired:A. ConesB. Optic DiskC. RodsD. Optic Nerve3.03 Remember the structures of the sensory system22Answer

Rods

Why?3.03 Remember the structures of the sensory system23Because.Rods are active in dim light3.03 Remember the structures of the sensory system24Structures of the eyesExternal structuresOrbitEyelidsEyelashesConjunctivaLacrimal apparatusExtrinsic muscles

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Structures of the eyesExternal structures3.03 Remember the structures of the sensory system26

Structures of eyesExtrinsic muscles3.03 Remember the structures of the sensory system27

EyesInternal structures-Lens focuses light rays on the retina

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QuestionThe disorder that deals with clouding of the lens is?A. glaucomaB. cataractC. Macular degeneration

3.03 Remember the structures of the sensory system29AnswerCataract

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Macular DegenerationA condition which causes loss of central vision needed for driving and reading3.03 Remember the structures of the sensory system31

Ears- hearing and balance3.03 Remember the structures of the sensory system32

3 divisions of the earsExternal earMiddle earAlso known as the tympanic cavityInner earAlso known as the labyrinth3.03 Remember the structures of the sensory system33

Structures of the earsExternal earPinna or auricle-part we seeAuditory canal or external auditory meatus-middle earCeruminous glandsTympanic membrane-vibrates with sound waves

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Structures of the earsMiddle earOssicles-3 tiny bonesHammer or malleusAnvil or incusStirrup or stapesEustachian tube-

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QuestionWhich structure is part of the middle ear?A. tympanic membraneB. semicircular canalC. incusD. auditory canal3.03 Remember the structures of the sensory system36AnswerIncus3.03 Remember the structures of the sensory system37 DisordersExternal otitis Otitis media

Otosclerosis Menieres diseaseTinnitus PresbycusisConductive hearing loss-Ear waxSensorineural hearing loss3.03 Remember the structures of the sensory system38

QuestionMary has an ear clog impacted with ear wax. Which sensory disorder does she have making it hard for her to hear?A. TinnitusB. VertigoC. Sensoineural Hearling lossD. Conductive hearing loss3.03 Remember the structures of the sensory system39AnswerConductive Hearing Loss-Why?3.03 Remember the structures of the sensory system40.becauseThe ear wax is not allowing the sound waves to enter the ear drum3.03 Remember the structures of the sensory system41QuestionOwen has a cold and is pulling at his ears. He has a fever and fluid draining from his right ear. Which sensory disorder is he experiencing?A. TinnitusB. VertigoC. Menieres DiseaseD. Otitis Media

3.03 Remember the structures of the sensory system42AnswerOtitis Media OM3.03 Remember the structures of the sensory system43Structures of the earsInner earCochleaPerilymph fluidSemicircular canalsEndolymph fluidVestibule chamber

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QuestionA construction worker does not wear appropriate hearing protection and is complaining of ringing in his ear. Which sensory order is he experiencing?A. TinnitusB. VertigoC. Sensoineural Hearling lossD. Conductive hearing loss

3.03 Remember the structures of the sensory system45AnswerTinnitus3.03 Remember the structures of the sensory system46Nose

3.03 Remember the structures of the sensory system47Structures of the noseNaresNasal ciliaNasal septumOlfactory receptorsTurbinates3.03 Remember the structures of the sensory system48

Structures of the nose

3.03 Remember the structures of the sensory system49Structures of the noseOlfactory area 3.03 Remember the structures of the sensory system50

Disorders of the NoseDeviated nasal septum

Nasal polyps

Rhinitis

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QuestionSasha has hayfever and complains of constant nasal drainage. What is her medical conditon?A. Deviated nasal septumB. Nasal polypsC. Rhinitis

3.03 Remember the structures of the sensory system52AnswerRhinorrhea3.03 Remember the structures of the sensory system53Tongue

3.03 Remember the structures of the sensory system54Thrush- yeast and can be an opportunistic infection

3.03 Remember the structures of the sensory system55Strawberry TongueA four-year-old develops a 103 degree fever and a rash over her body. Her throat is bright red. In fact, so is her mouth, even her tongue. Not the usual pink. Bright red. (strep)Glossitis-inflammation

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Structures of the tongueTaste receptorsAlso known as gustatory buds or taste buds or PAPILLA-medical term

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QuestionWhat is the medical term for your taste buds?A. ciliaB. alveoliC. papillaD. pinna3.03 Remember the structures of the sensory system58Answerpapilla3.03 Remember the structures of the sensory system59Trivia 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 mouthsEveryones tongue print is different similar to fingerprints

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QuestionOmari had an ear infection and his doctor gave him antibiotics. Now he has white patches on his tongue. What sensory disorder is he experiencing?A. Strawberry tongueB. GlossitisC. GlossectomyD. Thrush3.03 Remember the structures of the sensory system61AnswerThrush3.03 Remember the structures of the sensory system62Skin3.03 Remember the structures of the sensory system63

Structures of the skinEpidermis layerDermis layerSubcutaneous layer

Touch receptorsTactile corpuscles located in the skinTemperature sensorsPain receptors

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Phantom Leg Pain

3.03 Remember the structures of the sensory system65QuestionTerry lost his right leg during a road side bomb. Even though his surgeons removed his leg, his brain still tells him that his foot is cramping. This is an example of ?A. dermal painB. psoriasisC. urticariaD. phantom pain3.03 Remember the structures of the sensory system66AnswerPhantom pain3.03 Remember the structures of the sensory system67Essential questionsWhat are the structures of the sensory system?

The End3.03 Remember the structures of the sensory system68