1. Nervous System Basics I.Function II.Subdivisions III.Anatomy

2. Functions of the Nervous System 1.Sensory Input

3. Functions of the Nervous System 1.Sensory Input 2.Integration

4. Functions of the Nervous System 1.Sensory Input 2.Integration 3.Motor Output

6. Nervous System Basics I.Function II.Subdivisions III.Anatomy

7. Nervous system CNS PNS

8. Nervous System Organization Central Nervous System (CNS) – Brain & Spinal Cord

9. Nervous System Organization Central Nervous System (CNS) – Brain & Spinal Cord – Integration Center

10. Nervous System Organization Central Nervous System (CNS) – Brain & Spinal Cord – Integration Center – Interpret stimuli & cause motor response

11. Nervous System Organization Central Nervous System (CNS) – Brain & Spinal Cord – Integration Center – Interpret stimuli & cause motor responses Peripheral Nervous System – Spinal & Cranial Nerves

12. Nervous System Organization Central Nervous System (CNS) – Brain & Spinal Cord – Integration Center – Interpret stimuli & cause motor responses Peripheral Nervous System – Spinal & Cranial Nerves – Link body to CNS

13. Nervous system CNS PNS EfferentAfferent

14. Subdivisions of the PNS Sensory (Afferent) Division –Carry impulse to CNS

15. Subdivisions of the PNS Sensory (Afferent) Division –Carry impulse to CNS Receptor types –Somatic sensory receptors –Visceral sensory receptors

16. Nervous System Organization Central Nervous System (CNS) – Brain & Spinal Cord – Integration Center – Interpret stimuli & cause motor responses Peripheral Nervous System – Spinal & Cranial Nerves – Link body to CNS

17. Subdivisions of the PNS Motor (Efferent) Division –Carry impulse from CNS to the _________ organs

18. Subdivisions of the PNS Motor (Efferent) Division –Carry impulse from CNS to the _________ organs Potential Effects: –Muscle contraction

19. Subdivisions of the PNS Motor (Efferent) Division –Carry impulse from CNS to the _________ organs Potential Effects: –Muscle contraction –Hormone secretion

20. Nervous system CNS PNS EfferentAfferent SomaticAutonomic

21. Efferent Subdivisions Somatic Nervous System –Motor nerves carrying impulse to _______ muscle

22. Efferent Subdivisions Somatic Nervous System –Motor nerves carrying impulse to _______ muscle – “Voluntary Nervous System”

23. Efferent Subdivisions Somatic Nervous System –Motor nerves carrying impulse to _______ muscle – “Voluntary Nervous System” – Conscious control

24. Efferent Subdivisions Autonomic Nervous System –Motor nerves carrying impulse to glands, ________ & _______ muscle

25. Efferent Subdivisions Autonomic Nervous System –Motor nerves carrying impulse to glands, ________ & _______ muscle – “Involuntary Nervous System”

26. Efferent Subdivisions Autonomic Nervous System –Motor nerves carrying impulse to glands, ________ & _______ muscle – “Involuntary Nervous System” – Runs on “Autopilot”

27. Efferent Subdivisions Autonomic Nervous System –Motor nerves carrying impulse to glands, ________ & _______ muscle – “Involuntary Nervous System” – Runs on “Autopilot” –Maintains homeostasis

28. Nervous system CNS PNS EfferentAfferent SomaticAutonomic Sympathetic Parasympathetic

29. Autonomic Nervous System Sympathetic Nervous System –Emergency situations –“Fight of Flight” response –Effects on body include: sweating scalp “prickling” increased heart rate Adrenalin release

30. Parasympathetic –Non-emergency situations Autonomic NS Subdivisions

31. Parasympathetic –Non-emergency situations –“Resting and Digesting” Autonomic NS Subdivisions

32. Parasympathetic –Non-emergency situations –“Resting and Digesting” –Effects include: decreased heart rate increases peristalsis bladder contraction

33. Nervous System Basics I.Function II.Subdivisions III.Anatomy

34. 1.Neuroglia (“nerve glue”) Supporting skeleton for nerves Types of Nervous Tissue

35. 1.Neuroglia (“nerve glue”) Supporting skeleton for nerves Insulate nerves by forming a “myelin sheath” Types of Nervous Tissue

36. 1.Neuroglia (“nerve glue”) Supporting skeleton for nerves Insulate nerves by forming a “myelin sheath” 2.Neuron (nerve cells) Specialized cells that transmit _________ impulses Types of Nervous Tissue

37. R eceive signals from other __________ Dendrites Axon Synaptic Terminal Cell Body

38. Contains nucleus and organelles Dendrites Axon Synaptic Terminal Cell Body

39. Generates and transmits the ________ potential Dendrites Axon Synaptic Terminal Cell Body

40. Dendrites Axon Synaptic Terminal Cell Body Sends chemical signals called _____________ to adjacent neurons

41. Communication Between Neurons Synapse Sending NeuronReceiving Neuron

42. What is a Nerve?

43. Nerve. Bundle Nerve Neuron

44. Motor root - Carries signal out to organs

45. Motor root - Carries signal out to organs Sensory root – Carries signal in from organs

46. Motor root - Carries signal out to organs Sensory root – Carries signal in from organs Motor + Sensory Root = Spinal Nerve

47. Motor root - Carries signal out to organs Sensory root – Carries signal in from organs Motor + Sensory Root = Spinal Nerve Dura Mater - Tough Protective tissue

48. Summary Nervous system allows for sensory input, integration, and response to stimuli Nervous system can be subdivided based on function and location Nerves transmit electrical impulses down an axon