Co-ordination and Homeostatis Two systems help to coordinate the activities and development of our bodies and keep our int...
objectives <ul><li>know that the  nervous system  uses nerves to communicate information  rapidly  around the body coordin...
keywords <ul><li>Neurone </li></ul><ul><li>Sensory </li></ul><ul><li>Reflex </li></ul><ul><li>Motor </li></ul><ul><li>Inte...
The nervous system <ul><li>There are 2 parts </li></ul><ul><li>The  CNS  – central nervous system </li></ul><ul><li>The  P...
Sensory Neurones <ul><li>Carry information from sense organs (skin, eye, ear, nose, tongue)  </li></ul><ul><li>To  the bra...
Motor neurones <ul><li>Carry information  from  the brain </li></ul><ul><li>To effectors (muscles and glands) </li></ul>
<ul><li>Stimulus </li></ul><ul><li>Coordinator </li></ul><ul><li>Effector </li></ul><ul><li>response </li></ul>
How sensitive are you?
Plenary <ul><li>True or false? </li></ul><ul><li>Nerves are the longest cells of the body </li></ul><ul><li>The PNS is the...
Reflex arc
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07 Co Ordination And Homeostatis

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07 Co Ordination And Homeostatis

  1. 1. Co-ordination and Homeostatis Two systems help to coordinate the activities and development of our bodies and keep our internal environment constant . The nervous system, using electrical impulses, and endocrine system, using chemicals called hormones.
  2. 2. objectives <ul><li>know that the nervous system uses nerves to communicate information rapidly around the body coordinated by the central nervous system (brain and spinal cord). </li></ul><ul><li>describe the passage of the nerve impulse through a reflex arc. </li></ul>
  3. 3. keywords <ul><li>Neurone </li></ul><ul><li>Sensory </li></ul><ul><li>Reflex </li></ul><ul><li>Motor </li></ul><ul><li>Intermediate / Relay </li></ul><ul><li>Synapse </li></ul><ul><li>spinal cord </li></ul>
  4. 4. The nervous system <ul><li>There are 2 parts </li></ul><ul><li>The CNS – central nervous system </li></ul><ul><li>The PNS – peripheral nervous system </li></ul><ul><li>CNS is the brain and spinal cord </li></ul><ul><li>PNS are the nerves </li></ul>
  5. 5. Sensory Neurones <ul><li>Carry information from sense organs (skin, eye, ear, nose, tongue) </li></ul><ul><li>To the brain </li></ul>
  6. 6. Motor neurones <ul><li>Carry information from the brain </li></ul><ul><li>To effectors (muscles and glands) </li></ul>
  7. 7. <ul><li>Stimulus </li></ul><ul><li>Coordinator </li></ul><ul><li>Effector </li></ul><ul><li>response </li></ul>
  8. 8. How sensitive are you?
  9. 9. Plenary <ul><li>True or false? </li></ul><ul><li>Nerves are the longest cells of the body </li></ul><ul><li>The PNS is the brain and spinal cord </li></ul><ul><li>Motor neurones carry information to the brain </li></ul><ul><li>Reflexes involve no thinking </li></ul><ul><li>The skin is the biggest sense organ </li></ul>
  10. 10. Reflex arc

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