Chapter 17: The Nervous System and Behavioral Disorders

1. Chapter 17: The Nervous System and Behavioral Disorders

2. Chapter Objectives • Components of the nervous system. • Functions of the regions of the brain. • How the central nervous system is protected. • Sympathetic and parasympathetic systems. • Word parts pertaining to the nervous system. • Major disorders of the nervous system. • Major behavioral disorders. • Common symptoms of neurologic disorders. • Abbreviations used in neurology.

3. Key TermsNormal Structure and Function

4. Key TermsNormal Structure and Function (cont’d)

5. Key TermsNormal Structure and Function (cont’d)

6. Key TermsNormal Structure and Function (cont’d)

7. Key TermsNormal Structure and Function (cont’d)

8. Key TermsNormal Structure and Function (cont’d)

9. Key TermsNormal Structure and Function (cont’d)

10. Key TermsNeurologic Disorders

11. Key TermsNeurologic Disorders (cont’d)

12. Key TermsNeurologic Disorders (cont’d)

13. Key TermsNeurologic Disorders (cont’d)

14. Key TermsNeurologic Disorders (cont’d)

15. Key TermsNeurologic Disorders (cont’d)

16. Key TermsDiagnosis and Treatment

17. Key TermsBehavioral Disorders

18. Key TermsBehavioral Disorders (cont’d)

19. Key TermsBehavioral Disorders (cont’d)

20. Supplementary TermsNormal Structure and Function

21. Supplementary TermsNormal Structure and Function (cont’d)

22. Supplementary TermsNormal Structure and Function (cont’d)

23. Supplementary TermsSymptoms and Conditions

24. Supplementary TermsSymptoms and Conditions (cont’d)

25. Supplementary TermsSymptoms and Conditions (cont’d)

26. Supplementary TermsSymptoms and Conditions (cont’d)

27. Supplementary TermsSymptoms and Conditions (cont’d)

28. Supplementary TermsSymptoms and Conditions (cont’d)

29. Supplementary TermsDiagnosis and Treatment

30. Supplementary TermsDiagnosis and Treatment (cont’d)

31. Supplementary TermsPsychoactive Drugs

32. Supplementary TermsPsychoactive Drugs

33. Abbreviations

34. Abbreviations (cont’d)

35. Abbreviations (cont’d)

36. Abbreviations (cont’d)

37. Nervous System • Controls body functions with electric impulses • Two physical systems • Central nervous system • Brain • Spinal cord • Peripheral nervous system • All other nerve tissue

38. Nervous System (cont’d) • Two functional systems • Somatic nervous system • Controls skeletal muscles • Autonomic nervous system • Controls: • Smooth muscles • Cardiac muscles • Glands

39. Anatomic Divisions of the Nervous System

40. The Neuron • Basic functional unit of nervous system • Two types of fibers extend from cell body • Dendrite • Carries impulses toward cell body • Axon • Carries impulses away from cell body • Some covered with myelin

41. The Neuron (cont’d) • Types of neurons • Sensory neurons • Transmit impulses towards CNS • Motor neurons • Transmit impulses away from CNS • Connecting neurons • Contact at synapse

42. Motor Neuron

43. Nerves • Bundles of neuron fibers in PNS • Ganglion = collection of cell bodies along nerve pathway • Most nerves contain both sensory and motor fibers

44. Roots for the Nervous System and the Spinal Cord

45. Roots for the Nervous System and the Spinal Cord (cont’d)

46. Roots for the Brain

47. Roots for the Brain (cont’d)

48. Suffixes for the Nervous System

49. Suffixes for the Nervous System (cont’d)

50. The Brain • Cerebrum • Largest part of brain • Composed mostly of white matter • Also houses cerebral cortex • Thin outer layer of gray matter • Higher brain functions • Divided into two hemispheres • Deep groove separates hemispheres • Called longitudinal fissure