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sensitivity and coordination
 

sensitivity and coordination

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    sensitivity and coordination sensitivity and coordination Presentation Transcript

    • U
      N
      I
      T
      2
      Sensitivity and
      COORDINATION. By Adrián Muñiz
    • Stimuli and responses
      A stimulusisanythingthataffectsany of thebody’sactivities.
      There are two types of stimuli:
      INTERNAL: they come from inside our bodies.
      EXTERNAL: these come from outside the body.
      Response:
      ItIsthebodyanswerto a stimulus.
      e.g. Weeatwhenwe are hungry.
      Stimulus
      Response
    • StimuliReceptors
      The body has different receptors to receive different types of stimuli.
      There are two types of receptors:
      Internal receptors. They receive the internal stimuli our bodies produce. They are all over the body.
      External receptors. They receive external stimuli. They are in the sensory organs.
      http://vimeo.com/7592583(Video)
    • Responses
      Thebodyrespondstoanystimulus. There are twobasictypes of responses:
      Muscular responses: These are movementsthemusclesmake in response to a stimulus.
      Glandular responses: These are whenglands produce varioussubstances in response to a stimulus.
    • THE SENSES (1)
      Sight:Theeyeisthebody’sorganforthesense of sight.Theeyeismade up of theeyeballand protectedbytheeyebrows,eyelids and eyelashes
      Hearing:Theearisthebody’sorganforthesense of hearing.Theear has threeparts: 1-The outerear2-The middleear3-The innerear
      Touch: Thebody’sorganforthesense oftouchistheskin.Theskinismade up of threelayers: 1-Epidermis 2-Dermis 3-Hypodermis
    • THE SENSES (2)
      Smell:Thebody’sorganforthesense of smellisthenose.Thereceptors of smell are in thepituitary, a structureinsidethenostrils.Theorganforthesense of smellisthenose.
      Taste: Thebody’sorganforthesense of tasteisthetongue.Thereceptors of taste are in thetaste buds.
    • THE NERVOUS SYSTEM AND HOW IT WORKS(1)
      Thenervoussystemreceives and interpretstheinformation of theinternal and externalreceptors,anditdevelops and transmits a response.Itismade up of nerves and nerve centres. Nervestransmitinformation. Theyare theperipheralnervoussystem. Thenerve centres interprettheinformation and develop responses. Theyformthecentral nervoussystem.
      The central nervoussystem: Ithas twoparts: Brain: Itisinsidetheskull.It has threemainparts:cerebrum,cerebellum and brainstem. Spinalcord:Itis a thickcordmade up of manyneuronsthatsgoesthroughtheinside of thespine.
    • THE NERVOUS SYSTEM AND HOW IT WORKS(2)
      TheperipheralnervoussystemItismade up of nerves: Sensorynerves.Theytransmitinformationfromthesensoryorgans and internalorganstothe central nervoussystem. Motor nerves.Theytransmit responses fromthe central nervoussystemtothemuscles and glands of ourbodies.
    • THE NERVOUS SYSTEM AND HOW IT WORKS(3)
      NeuronsNeurons are cellsthatbelongtothenervoussystem.Theyhave a star-likeshapemade up of threeparts :a cellbody,dendrites and axons.
    • THE NERVOUS SYSTEM AND HOW IT WORKS(4)
      VOLUNTARY MOVEMENTS Thisishowthenervoussystemreactsto a stimuluswithvoluntarymovements. 1-Sense nerves2-Brain 3-Motor nerves
      InvoluntarymovementsWithinvoluntarymovementsorreflexes,itisthespinalcord and notthebrainthatdevelops a response
    • Theend!!