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Junior Nervous System Janet. J. Nelson RN, CMA
DID YOU KNOW? <ul><li>The human brain is made up of a staggering 15 billion cells with about thousand billion connections ...
Student Objectives <ul><li>1.  Describe the functions of NS </li></ul><ul><li>2. List the main divisions of NS </li></ul><...
How many nervous system/s are there? <ul><li>One with two subdivisions: </li></ul><ul><li>CNS PNS </li></ul>PNS is further...
Afferent vs. Efferent Neurons too can be afferent, efferent or association
Neurons vs.Neuroglia <ul><li>Neurons: functional nervous cells </li></ul><ul><li>Neuroglia: nerve “glue” </li></ul>
Nerve conduction animation <ul><li>http://www.pennmedicine.org/encyclopedia/em_DisplayAnimation.aspx?gcid=000089&ptid=17  ...
Typical Neuron <ul><li>AXON WITH MYELIN SHEATH </li></ul>CELL BODY DENDRITE
 
Review Game <ul><li>http://msjensen.cehd.umn.edu/webanatomy/nervous/default.html </li></ul><ul><li>Please label the Neuron...
CHARACTERISTICS OF NEURONS <ul><li>IRRITABILITY: </li></ul><ul><li>CONDUCTIVITIY: </li></ul><ul><li>Sensory Neurons </li><...
Fun facts about neurons <ul><li>Most specialized cell in  animals </li></ul><ul><li>Longest cell </li></ul><ul><ul><li>blu...
Neurons <ul><li>Most nerves contain both motor and sensory fibers. </li></ul><ul><li>However; there are a few purely senso...
Neuron transmission terms <ul><li>Electrochemical </li></ul><ul><li>Polarized </li></ul><ul><li>Depolarized </li></ul><ul>...
 
 
Synapse
Animation of neuron transmission <ul><li>http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter14/animatio...
Jumping the synaptic gap <ul><li>http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter14/animation__trans...
Cocaine & other drugs <ul><li>Scientist believe cocaine causes release of Dopamine and blocks it’s reabsorption. </li></ul...
Did you know? <ul><li>Adult human brain  weighs about 3#. </li></ul><ul><li>Brain is the texture of  cold oatmeal . </li><...
Meninges Dura Mater Arachnoid Pia Mater
 
Lumbar Puncture
SPINAL DEFECTS Spinal Bifida Meningocele  Myelomeningocele
 
CEREBRAL VENTRICLES <ul><li>Lateral Venticles  </li></ul><ul><li>Foramen of Monroe  3rd Ventricle  Cerebral Aqueduct </li>...
ENCEPHALOCLE Sagittal, magnetic resonance imaging (MRI) scan through the midline shows brain heniation through the sphenoi...
CEREBROSPINAL FLUID  <ul><li>Made in the choroid plexus from blood </li></ul><ul><li>Functions for protection and nutritio...
Brain <ul><li>Three Parts-  </li></ul><ul><ul><li>Cerebrum </li></ul></ul><ul><li>- Cerebellum </li></ul><ul><li>- Brain S...
Cerebrum <ul><li>Convolutuions (gyri) </li></ul><ul><li>Sulci (sulcus </li></ul><ul><li>Fissures </li></ul>Three Parts- Ce...
Cerebral Lobes
 
PATHOPHYSIOLOGY <ul><li>Parkinson's Disease </li></ul><ul><li>Huntington’s Chorea (Disease) </li></ul>
DIENCEPHALON (INTERBRAIN) <ul><li>Thalamus </li></ul><ul><li>Hypothalamus </li></ul><ul><li>Epithalamus (pineal gland) </l...
Cerebrovascular Accident 01/06/12
CEREBELLUM 01/06/12
BRAIN STEM 01/06/12 Notice the size of the Thalamus and  position of brain stem
SPINAL CORD <ul><li>In cross section  gray matter internally  and white matter exteriorly </li></ul><ul><li>Spinal nerves ...
SPINAL CORD <ul><li>Can you locate the: </li></ul><ul><li>Spinal cord? </li></ul><ul><li>Spinal nerves? </li></ul><ul><li>...
CAUDA EQUINA
SPINAL NERVES
How a Reflex Happens
CRANIAL NERVES I -  Olfactory  II - Optic  III - Oculomotor  IV - Trochlear  V - Trigeminal  VI - Abducens  VII - Facial  ...
<ul><li>l </li></ul>Bell’s Palsy
ANS <ul><li>Sympathetic (Fight or Flight) </li></ul><ul><li>Parasympathetic </li></ul><ul><li>(Rest & Digest) or  (Repair ...
Add photo of info sheet <ul><li>l </li></ul>
t <ul><li>l </li></ul>
t <ul><li>l </li></ul>
t <ul><li>l </li></ul>
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Jr nervous system

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  1. 1. Junior Nervous System Janet. J. Nelson RN, CMA
  2. 2. DID YOU KNOW? <ul><li>The human brain is made up of a staggering 15 billion cells with about thousand billion connections between these cells. Yet it weighs less than 3 pounds. </li></ul><ul><li>At three pounds the brain makes up on 2% of the total body weight but consumes 25% of energy of the entire body </li></ul><ul><li>The spinal cord is less than 2 feet long but controls over 2 billion nerve cells. </li></ul><ul><li>The nervous system transmits impulses to the brain at the speed of 180 mph. </li></ul><ul><li>The brain is as soft as butter. </li></ul>
  3. 3. Student Objectives <ul><li>1. Describe the functions of NS </li></ul><ul><li>2. List the main divisions of NS </li></ul><ul><li>3. Define & label neuron </li></ul><ul><li>4. Differentiate between motor and sensory neuron </li></ul><ul><li>5. Identify the parts of brain and spinal cord </li></ul><ul><li>6. Describe and label functions of the parts of brain </li></ul><ul><li>7.Describe and label functions of the spinal cord </li></ul><ul><li>8. Identify disorders of the NS. </li></ul>
  4. 4. How many nervous system/s are there? <ul><li>One with two subdivisions: </li></ul><ul><li>CNS PNS </li></ul>PNS is further divided into autonomic and motor
  5. 5. Afferent vs. Efferent Neurons too can be afferent, efferent or association
  6. 6. Neurons vs.Neuroglia <ul><li>Neurons: functional nervous cells </li></ul><ul><li>Neuroglia: nerve “glue” </li></ul>
  7. 7. Nerve conduction animation <ul><li>http://www.pennmedicine.org/encyclopedia/em_DisplayAnimation.aspx?gcid=000089&ptid=17 </li></ul>
  8. 8. Typical Neuron <ul><li>AXON WITH MYELIN SHEATH </li></ul>CELL BODY DENDRITE
  9. 10. Review Game <ul><li>http://msjensen.cehd.umn.edu/webanatomy/nervous/default.html </li></ul><ul><li>Please label the Neuron 2 Short and the Neuron structure short . </li></ul>
  10. 11. CHARACTERISTICS OF NEURONS <ul><li>IRRITABILITY: </li></ul><ul><li>CONDUCTIVITIY: </li></ul><ul><li>Sensory Neurons </li></ul><ul><li>Motor Neurons </li></ul><ul><li>Connecting Neurons </li></ul>
  11. 12. Fun facts about neurons <ul><li>Most specialized cell in animals </li></ul><ul><li>Longest cell </li></ul><ul><ul><li>blue whale neuron </li></ul></ul><ul><ul><ul><li>10-30 meters </li></ul></ul></ul><ul><ul><li>giraffe axon </li></ul></ul><ul><ul><ul><li>5 meters </li></ul></ul></ul><ul><ul><li>human neuron </li></ul></ul><ul><ul><ul><li>1-2 meters </li></ul></ul></ul>Nervous system allows for 1 millisecond response time
  12. 13. Neurons <ul><li>Most nerves contain both motor and sensory fibers. </li></ul><ul><li>However; there are a few purely sensory nerves….. </li></ul>
  13. 14. Neuron transmission terms <ul><li>Electrochemical </li></ul><ul><li>Polarized </li></ul><ul><li>Depolarized </li></ul><ul><li>Action potential </li></ul><ul><ul><ul><li>Repolarized </li></ul></ul></ul><ul><ul><ul><li>Sodium-Potassium Pump </li></ul></ul></ul>
  14. 17. Synapse
  15. 18. Animation of neuron transmission <ul><li>http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter14/animation__the_nerve_impulse.html </li></ul><ul><li>http://www.brainexplorer.org/neurological_control/Neurological_Neurotransmission.shtml# </li></ul>
  16. 19. Jumping the synaptic gap <ul><li>http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter14/animation__transmission_across_a_synapse.html ?????? </li></ul>
  17. 20. Cocaine & other drugs <ul><li>Scientist believe cocaine causes release of Dopamine and blocks it’s reabsorption. </li></ul><ul><li>Eventually the person makes no Dopmaine of own and is dependent on artificial supplementation with Cocaine. </li></ul>
  18. 21. Did you know? <ul><li>Adult human brain weighs about 3#. </li></ul><ul><li>Brain is the texture of cold oatmeal . </li></ul><ul><li>The brain itself cannot feel pain The brain is surrounded by loads of tissues, nerves and blood vessels that are plenty receptive to pain. </li></ul><ul><li>80% of the brain is water. </li></ul>
  19. 22. Meninges Dura Mater Arachnoid Pia Mater
  20. 24. Lumbar Puncture
  21. 25. SPINAL DEFECTS Spinal Bifida Meningocele Myelomeningocele
  22. 27. CEREBRAL VENTRICLES <ul><li>Lateral Venticles </li></ul><ul><li>Foramen of Monroe 3rd Ventricle Cerebral Aqueduct </li></ul><ul><li> 4 th Ventricle </li></ul><ul><li>Subarachnoid space </li></ul><ul><li> Returning to cranial venous supply by arachnoid villi </li></ul>
  23. 28. ENCEPHALOCLE Sagittal, magnetic resonance imaging (MRI) scan through the midline shows brain heniation through the sphenoid into the nasal cavity (arrow).
  24. 29. CEREBROSPINAL FLUID <ul><li>Made in the choroid plexus from blood </li></ul><ul><li>Functions for protection and nutrition </li></ul>
  25. 30. Brain <ul><li>Three Parts- </li></ul><ul><ul><li>Cerebrum </li></ul></ul><ul><li>- Cerebellum </li></ul><ul><li>- Brain Stem </li></ul>
  26. 31. Cerebrum <ul><li>Convolutuions (gyri) </li></ul><ul><li>Sulci (sulcus </li></ul><ul><li>Fissures </li></ul>Three Parts- Cerebrum Cerebellum Brain Stem
  27. 32. Cerebral Lobes
  28. 34. PATHOPHYSIOLOGY <ul><li>Parkinson's Disease </li></ul><ul><li>Huntington’s Chorea (Disease) </li></ul>
  29. 35. DIENCEPHALON (INTERBRAIN) <ul><li>Thalamus </li></ul><ul><li>Hypothalamus </li></ul><ul><li>Epithalamus (pineal gland) </li></ul>The diencephalon is colored reddish-orange
  30. 36. Cerebrovascular Accident 01/06/12
  31. 37. CEREBELLUM 01/06/12
  32. 38. BRAIN STEM 01/06/12 Notice the size of the Thalamus and position of brain stem
  33. 39. SPINAL CORD <ul><li>In cross section gray matter internally and white matter exteriorly </li></ul><ul><li>Spinal nerves (31) emerge laterally from cord </li></ul>01/06/12
  34. 40. SPINAL CORD <ul><li>Can you locate the: </li></ul><ul><li>Spinal cord? </li></ul><ul><li>Spinal nerves? </li></ul><ul><li>Cerebellum? </li></ul><ul><li>Dura mater? </li></ul><ul><li>Medulla Oblongate? </li></ul>
  35. 41. CAUDA EQUINA
  36. 42. SPINAL NERVES
  37. 43. How a Reflex Happens
  38. 44. CRANIAL NERVES I - Olfactory II - Optic III - Oculomotor IV - Trochlear V - Trigeminal VI - Abducens VII - Facial VIII - Auditory IX - Glossopharyngeal X - Vagus XI - Accessory XII - Hypoglassal
  39. 45. <ul><li>l </li></ul>Bell’s Palsy
  40. 46. ANS <ul><li>Sympathetic (Fight or Flight) </li></ul><ul><li>Parasympathetic </li></ul><ul><li>(Rest & Digest) or (Repair & Repose) </li></ul>
  41. 47. Add photo of info sheet <ul><li>l </li></ul>
  42. 48. t <ul><li>l </li></ul>
  43. 49. t <ul><li>l </li></ul>
  44. 50. t <ul><li>l </li></ul>
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