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The nervous system Content by Megan McDonald
CNS Central Nervous System Brain Spinal Cord
PNS Peripheral Nervous System Spinal Nerves Cranial Nerves
CNS PNS Afferent (Sensory) Efferent (Motor) Sense organ Somatic (voluntary) Autonomic (involuntary) Parasympathetic Sympat...
Activity <ul><li>Marieb colouring book </li></ul><ul><li>Chapter 7, Qu.2, Page 132 </li></ul>
Nervous system function <ul><li>Sensory – afferent </li></ul><ul><li>Integrative – information processed </li></ul><ul><li...
Nervous tissue <ul><li>Neurons – Afferent, interneurons, efferent </li></ul><ul><li>Neuroglia – supporting cells </li></ul>
Neurons <ul><li>Nerve cell </li></ul><ul><li>Initiates, propagates and transmits electrical signals. </li></ul>
Neuron
Neuroglia <ul><li>Supporting cell of nervous system </li></ul><ul><li>Astrocytes – metabolic, physical support; brain </li...
Activity 14.3 <ul><li>Marieb colouring book </li></ul><ul><li>Chapter 7, Qu.7, Page 135 </li></ul><ul><li>Chapter 7, Qu.6,...
Activity 14.4 <ul><li>Purple book </li></ul>
Neuron function <ul><li>Stimulus  </li></ul><ul><li>Excitability </li></ul><ul><li>Synapse </li></ul><ul><li>Action potent...
Action Potential <ul><li>Resting state – inside cell membrane is more –ve than outside </li></ul><ul><li>Depolarisation – ...
Synapse <ul><li>Neurons not connected physically </li></ul><ul><li>Gaps between neurons </li></ul><ul><li>Impulses pass ov...
Reflex Arc <ul><li>Rapid action without conscious control </li></ul><ul><li>Occurs at spinal cord level </li></ul>
Reflex Arc Stimulus Afferent neuron Spinal cord Efferent neuron Muscle Contracts
 
Activity 14.5 <ul><li>Marieb colouring book </li></ul><ul><li>Chapter 7, Qu.11, Page 137 </li></ul>
Central Nervous System <ul><li>Brain </li></ul><ul><li>Spinal Cord </li></ul>
 
 
Cerebrum <ul><li>Left and right hemispheres </li></ul><ul><li>Hemispheres joined by corpus callosum </li></ul><ul><li>Gyri...
Cerebrum <ul><li>Frontal Lobe </li></ul><ul><li>Personality </li></ul><ul><li>Decision making </li></ul><ul><li>Co-ordinat...
Cerebrum <ul><li>Parietal Lobe </li></ul><ul><li>Sensation </li></ul><ul><li>Proprioception </li></ul><ul><li>Understandin...
Cerebrum <ul><li>Occipital Lobe </li></ul><ul><li>Vision </li></ul><ul><li>Interpreting vision </li></ul>
Cerebrum <ul><li>Temporal Lobe </li></ul><ul><li>Motivation </li></ul><ul><li>Emotion </li></ul><ul><li>Memory </li></ul><...
Cerebrum
Diencephalon <ul><li>Enclosed by cerebral hemispheres </li></ul><ul><li>Thalamus </li></ul><ul><li>Hypothalamus </li></ul>...
 
Brainstem <ul><li>Connects cerebrum and cerebellum to spinal cord </li></ul><ul><li>Midbrain </li></ul><ul><li>Pons </li><...
Cerebellum <ul><li>“ Little brain” </li></ul><ul><li>Posterior and inferior to cerebrum </li></ul><ul><li>Posture and bala...
Basal Nuclei <ul><li>AKA Basal ganglia </li></ul><ul><li>Masses of neuron cell bodies </li></ul><ul><li>Lentiform nucleus ...
Activity 14.6 <ul><li>Marieb colouring book </li></ul><ul><li>Chapter 7, Qu.13, Page 138 </li></ul><ul><li>Chapter 7, Qu.1...
CNS Protection <ul><li>Bony </li></ul><ul><li>Membranous (meninges) </li></ul><ul><li>Cerebral Spinal Fluid </li></ul><ul>...
Meninges <ul><li>Three layers of tissue form meninges </li></ul><ul><li>Dura mater </li></ul><ul><li>Arachnoid mater </li>...
CSF <ul><li>Cerebrospinal Fluid </li></ul><ul><li>Contained between Arachnoid and Pia maters </li></ul><ul><li>In subarach...
 
Activity 14.7 <ul><li>Purple book </li></ul>
Spinal Cord <ul><li>Continuation of medulla oblongata </li></ul><ul><li>31 pairs of spinal nerves </li></ul><ul><li>Conduc...
 
PNS <ul><li>Peripheral Nervous System </li></ul><ul><li>Cranial Nerves </li></ul><ul><li>Spinal Nerves </li></ul>
Cranial Nerves <ul><li>12 Pairs </li></ul><ul><li>Originate in brain </li></ul><ul><li>Pge 149 </li></ul>
Cranial Nerves I I Olfactory II Optic III Oculomotor IV Trochlear V Trigeminal VI Abducens VII Facial VIII Vestibulocochle...
Cranial Nerves I I Olfactory IX Glossopharyngeal X Vagus XI Accessory XII Hypoglossal
Spinal Nerves <ul><li>31 Pairs </li></ul><ul><li>8 cervical </li></ul><ul><li>12 thoracic </li></ul><ul><li>5 sacral </li>...
Spinal Plexus <ul><li>Cervical </li></ul><ul><li>Lumbosacral </li></ul><ul><li>Brachial </li></ul><ul><li>Preserves (some)...
 
Somatic Nervous System <ul><li>Conscious control </li></ul><ul><li>Efferent impulses – to muscles </li></ul><ul><li>Affere...
Autonomic Nervous System <ul><li>Unconscious control </li></ul><ul><li>Sympathetic </li></ul><ul><li>Parasympathetic </li>...
Activity 14.11 <ul><li>Purple book </li></ul>
Homework! <ul><li>Muscle chart </li></ul><ul><li>Anat family </li></ul>
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Nervous System

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Presentation for Cert 4 massage therapy students.

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  • gud day to you maam! i really like your presentation... simple and direct... importantly not boring!!!!
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Transcript of "Nervous System"

  1. 1. The nervous system Content by Megan McDonald
  2. 2. CNS Central Nervous System Brain Spinal Cord
  3. 3. PNS Peripheral Nervous System Spinal Nerves Cranial Nerves
  4. 4. CNS PNS Afferent (Sensory) Efferent (Motor) Sense organ Somatic (voluntary) Autonomic (involuntary) Parasympathetic Sympathetic
  5. 5. Activity <ul><li>Marieb colouring book </li></ul><ul><li>Chapter 7, Qu.2, Page 132 </li></ul>
  6. 6. Nervous system function <ul><li>Sensory – afferent </li></ul><ul><li>Integrative – information processed </li></ul><ul><li>Motor - efferent </li></ul>
  7. 7. Nervous tissue <ul><li>Neurons – Afferent, interneurons, efferent </li></ul><ul><li>Neuroglia – supporting cells </li></ul>
  8. 8. Neurons <ul><li>Nerve cell </li></ul><ul><li>Initiates, propagates and transmits electrical signals. </li></ul>
  9. 9. Neuron
  10. 10. Neuroglia <ul><li>Supporting cell of nervous system </li></ul><ul><li>Astrocytes – metabolic, physical support; brain </li></ul><ul><li>Oligodendrocytes – myelin forming; CNS </li></ul><ul><li>Ependymal cells – produces CSF </li></ul><ul><li>Microglia – repair damaged neurons; CNS </li></ul><ul><li>Schwann cells – myelin forming; PNS </li></ul>
  11. 11. Activity 14.3 <ul><li>Marieb colouring book </li></ul><ul><li>Chapter 7, Qu.7, Page 135 </li></ul><ul><li>Chapter 7, Qu.6, Page 131 </li></ul>
  12. 12. Activity 14.4 <ul><li>Purple book </li></ul>
  13. 13. Neuron function <ul><li>Stimulus </li></ul><ul><li>Excitability </li></ul><ul><li>Synapse </li></ul><ul><li>Action potential </li></ul>
  14. 14. Action Potential <ul><li>Resting state – inside cell membrane is more –ve than outside </li></ul><ul><li>Depolarisation – inside membrane becomes +ve </li></ul><ul><li>Repolarisation – inside membrane returns to –ve. </li></ul>
  15. 15. Synapse <ul><li>Neurons not connected physically </li></ul><ul><li>Gaps between neurons </li></ul><ul><li>Impulses pass over synapses via neurotransmitters </li></ul>
  16. 16. Reflex Arc <ul><li>Rapid action without conscious control </li></ul><ul><li>Occurs at spinal cord level </li></ul>
  17. 17. Reflex Arc Stimulus Afferent neuron Spinal cord Efferent neuron Muscle Contracts
  18. 19. Activity 14.5 <ul><li>Marieb colouring book </li></ul><ul><li>Chapter 7, Qu.11, Page 137 </li></ul>
  19. 20. Central Nervous System <ul><li>Brain </li></ul><ul><li>Spinal Cord </li></ul>
  20. 23. Cerebrum <ul><li>Left and right hemispheres </li></ul><ul><li>Hemispheres joined by corpus callosum </li></ul><ul><li>Gyri – ridges </li></ul><ul><li>Sulci – grooves </li></ul><ul><li>Fissures – deep grooves </li></ul><ul><li>Lobes – regions of cerebrum </li></ul><ul><li>Cerebral cortex – grey matter </li></ul>
  21. 24. Cerebrum <ul><li>Frontal Lobe </li></ul><ul><li>Personality </li></ul><ul><li>Decision making </li></ul><ul><li>Co-ordination of complex movements </li></ul><ul><li>Speech (L) motor </li></ul>
  22. 25. Cerebrum <ul><li>Parietal Lobe </li></ul><ul><li>Sensation </li></ul><ul><li>Proprioception </li></ul><ul><li>Understanding of sensation </li></ul><ul><li>Speech comprehension </li></ul>
  23. 26. Cerebrum <ul><li>Occipital Lobe </li></ul><ul><li>Vision </li></ul><ul><li>Interpreting vision </li></ul>
  24. 27. Cerebrum <ul><li>Temporal Lobe </li></ul><ul><li>Motivation </li></ul><ul><li>Emotion </li></ul><ul><li>Memory </li></ul><ul><li>Hearing </li></ul>
  25. 28. Cerebrum
  26. 29. Diencephalon <ul><li>Enclosed by cerebral hemispheres </li></ul><ul><li>Thalamus </li></ul><ul><li>Hypothalamus </li></ul><ul><li>Epithalamus </li></ul><ul><li>Pineal body </li></ul><ul><li>Choroid plexus </li></ul>
  27. 31. Brainstem <ul><li>Connects cerebrum and cerebellum to spinal cord </li></ul><ul><li>Midbrain </li></ul><ul><li>Pons </li></ul><ul><li>Medulla oblongata </li></ul>
  28. 32. Cerebellum <ul><li>“ Little brain” </li></ul><ul><li>Posterior and inferior to cerebrum </li></ul><ul><li>Posture and balance </li></ul>
  29. 33. Basal Nuclei <ul><li>AKA Basal ganglia </li></ul><ul><li>Masses of neuron cell bodies </li></ul><ul><li>Lentiform nucleus </li></ul><ul><li>Caudate nucleus </li></ul><ul><li>Substantia nigra </li></ul>
  30. 34. Activity 14.6 <ul><li>Marieb colouring book </li></ul><ul><li>Chapter 7, Qu.13, Page 138 </li></ul><ul><li>Chapter 7, Qu.15, Page 138 </li></ul><ul><li>Chapter 7, Qu.16, Page 139 </li></ul><ul><li>Chapter 7, Qu.17, Page 140 </li></ul><ul><li>Chapter 7, Qu.18, Page 141 </li></ul>
  31. 35. CNS Protection <ul><li>Bony </li></ul><ul><li>Membranous (meninges) </li></ul><ul><li>Cerebral Spinal Fluid </li></ul><ul><li>Blood brain barrier </li></ul>
  32. 36. Meninges <ul><li>Three layers of tissue form meninges </li></ul><ul><li>Dura mater </li></ul><ul><li>Arachnoid mater </li></ul><ul><li>Pia mater </li></ul>
  33. 37. CSF <ul><li>Cerebrospinal Fluid </li></ul><ul><li>Contained between Arachnoid and Pia maters </li></ul><ul><li>In subarachnoid space </li></ul><ul><li>Formed by choroid plexus </li></ul><ul><li>Contained in ventricles </li></ul><ul><li>Nourishment </li></ul>
  34. 39. Activity 14.7 <ul><li>Purple book </li></ul>
  35. 40. Spinal Cord <ul><li>Continuation of medulla oblongata </li></ul><ul><li>31 pairs of spinal nerves </li></ul><ul><li>Conducts afferent and efferent signals </li></ul><ul><li>Reflex arc </li></ul>
  36. 42. PNS <ul><li>Peripheral Nervous System </li></ul><ul><li>Cranial Nerves </li></ul><ul><li>Spinal Nerves </li></ul>
  37. 43. Cranial Nerves <ul><li>12 Pairs </li></ul><ul><li>Originate in brain </li></ul><ul><li>Pge 149 </li></ul>
  38. 44. Cranial Nerves I I Olfactory II Optic III Oculomotor IV Trochlear V Trigeminal VI Abducens VII Facial VIII Vestibulocochlear I Olfactory
  39. 45. Cranial Nerves I I Olfactory IX Glossopharyngeal X Vagus XI Accessory XII Hypoglossal
  40. 46. Spinal Nerves <ul><li>31 Pairs </li></ul><ul><li>8 cervical </li></ul><ul><li>12 thoracic </li></ul><ul><li>5 sacral </li></ul><ul><li>1 coccygeal </li></ul>
  41. 47. Spinal Plexus <ul><li>Cervical </li></ul><ul><li>Lumbosacral </li></ul><ul><li>Brachial </li></ul><ul><li>Preserves (some) function in case of injury </li></ul>
  42. 49. Somatic Nervous System <ul><li>Conscious control </li></ul><ul><li>Efferent impulses – to muscles </li></ul><ul><li>Afferent impulses – from skin etc </li></ul>
  43. 50. Autonomic Nervous System <ul><li>Unconscious control </li></ul><ul><li>Sympathetic </li></ul><ul><li>Parasympathetic </li></ul>
  44. 51. Activity 14.11 <ul><li>Purple book </li></ul>
  45. 52. Homework! <ul><li>Muscle chart </li></ul><ul><li>Anat family </li></ul>
  46. 53. Thank you
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