1 / 18

NERVOUS REGULATION

NERVOUS REGULATION. NERVOUS REGULATION. WHAT ARE ALL THE LIFE PROCESSES? H.N.T.R.S.G.E.R.M.R WHICH ONES HAVE WE COVERED? H.N.T.R.S.G.E. WHAT ARE WE UP TO? R  REGULATION / RESPONSE WHAT IS THIS EXACTLY?

chenoa
Download Presentation

NERVOUS REGULATION

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. NERVOUS REGULATION

  2. NERVOUS REGULATION • WHAT ARE ALL THE LIFE PROCESSES? • H.N.T.R.S.G.E.R.M.R • WHICH ONES HAVE WE COVERED? • H.N.T.R.S.G.E. • WHAT ARE WE UP TO? • R  REGULATION / RESPONSE • WHAT IS THIS EXACTLY? • THE ENVIRONMENT, BOTH INTERNAL AND EXTERNAL, IS CONSTANTLY CHANGING…ORGANISMS MUST RESPOND TO THESE CHANGES AND REGULATE/CONTROL THESE RESPONSES ACCORDINGLY

  3. NERVOUS REGULATION • REGULATING AND RESPONDING TO CHANGES REQUIRES THE COORDINATION OF EVERY BODY SYSTEM…BUT THE MAJOR ONES TO CONSIDER ARE THE: • MUSCULOSKELETAL  CHECK • NERVOUS  CARRY MESSAGES • ENDOCRINE  CHEMICAL MESSAGES

  4. NERVOUS REGULATION • HOW DOES THE NERVOUS SYSTEM WORK? • THE PATHWAY OF A MESSAGE STIMULUS  RECEPTOR  IMPULSE  EFFECTOR  RESPONSE • DEFINITIONS? • STIMULUS • RECEPTOR • IMPULSE • EFFECTOR • RESPONSE

  5. NERVOUS REGULATION • REVIEW QUESTIONS: • FUNCTIONAL UNITS OF: • LUNGS  ?? • KIDNEYS  ?? • NERVOUS SYSTEM  ?? • NEURONS!!! • WHAT’S THE TRICK TO KNOWING HOW SOMETHING FUNCTIONS?

  6. NERVOUS REGULATION • NEURONS

  7. NERVOUS REGULATION • NEURONS • CELL BODY • DENDRITES • AXON • SCHWANN CELLS • MYELIN SHEATH • TERMINAL BRANCHES • TYPES OF NEURONS • SENSORY • INTERNEURON • MOTOR NEURON

  8. NERVOUS REGULATION • HOW DO NEURONS FIT INTO THE MESSAGE PATHWAY? STIMULUS  RECEPTOR  IMPULSE  EFFECTOR  RESPONSE

  9. NERVOUS REGULATION • IMPORTANT TO NOTE THAT ADJACENT NEURONS NEVER ACTUALLY TOUCH!! • INSTEAD THERE IS ASYNAPSE!!! • THE GAP, OR SPACE, BETWEEN ADJACENTNEURONS • THE MESSAGE MUST BEABLE TO CROSS THIS GAP!! • WE WILL COME BACK TO THIS SHORTLY!!

  10. NERVOUS REGULATION • UNDERSTANDING THE MESSAGE, OR IMPULSE, INVOLVED IN NERVOUS SYSTEM COMMUNICATION IS VERY, VERY, VERY, VERY, VERY, VERY, VERY, VERY, VERY, VERY, VERY, VERY, VERY, VERY, VERY, VERY, VERY, VERY, VERY, VERY, VERY, VERY, VERY, VERY, VERY, VERY, VERY, VERY, VERY, VERY, VERY, VERY COMPLEX!!

  11. NERVOUS REGULATION • THE NERVE IMPULSE IN SIMPLE TERMS: • A STIMULUS CHANGES THE PERMEABILITY OF THE CELL MEMBRANE, WHICH THEN ALLOWS SODIUM AND POTASSIUM TO CHANGE SIDES WITH REGARD TO THE MEMBRANE, CHANGING THE RELATIVE “CHARGE”…CREATING AN ELECTRICAL SIGNAL THAT TRAVELS DOWN THE CELL

  12. NERVOUS REGULATION • SOME COOL STUFF ABOUT NERVOUS SYSTEM IMPULSES • THRESHOLDS • REFRACTORY PERIODS • NEUROTRANSMITTERS • DRUGS!!

  13. NERVOUS REGULATION

  14. NERVOUS REGULATION • NERVOUS REGULATION IN PROTISTS

  15. NERVOUS REGULATION • NERVOUS REGULATION IN HYDRAS • CELLS ARE ALLLINKED TOGETHERFORMING A “NERVE NET” • NO FORMAL SYSTEM

  16. NERVOUS REGULATION • NERVOUS REGULATION IN EARTHWORMS • CENTRAL VS.PERIPHERALNERVOUSSYSTEM • GANGLIA • MULTIPLENERVE CELLSTHAT FUNCTIONSIMILAR TO A BRAIN

  17. NERVOUS REGULATION • NERVOUS REGULATION IN GRASSHOPPERS • SIMILAR TO EARTHWORM • INCORPORATES SOME MORE SPECIAL SENSE ORGANS (EYES, ANTENNAE)

  18. NERVOUS REGULATION • LET’S GET TO THE GOOD STUFF!!WHAT ABOUT HUMAN BRAINS?!?!? • CHAPTER 15, HUMAN NERVOUS SYSTEM…HERE WE COME 

More Related