1. Anatomy of the Nervous System
Central nervous system (CNS)
Spinal cord
Brain
Peripheral nervous system (PNS)
Nerve outside the brain and spinal cord

5. Ascending (Sensory) v v
Figure 16.1 v

6. Descending (motor) v v v

7. Brain

8. CNS Development

9. Regions of the Brain
Telencephalon
Diencephalon
Brain stem
Cerebellum

10. Brain Stem
Parts of the brain stem
Medulla oblongata
Pons
Midbrain

11. Medulla oblongata
Fig A sagittal section of the brain. (Photograph by Kevin Fitzpatrick on behalf of GKT School of Medicine, London.) 11

13. Pons
Fig A sagittal section of the brain. (Photograph by Kevin Fitzpatrick on behalf of GKT School of Medicine, London.) 13

15. functions Major Components of Brainstem
Cranial nerve nuclei & related structures
Long fiber tracts ascending and descending
Cerebellar paths and circuits
Reticular formation & related structures
Functional Divisions
Cranial nerve abnormalities
Long tract deficits (motor & sensory)
Ataxia (cerebellar origin)
Impaired level of consciousness (RF)

16. Midbrain
Fig A sagittal section of the brain. (Photograph by Kevin Fitzpatrick on behalf of GKT School of Medicine, London.) 16

19. Cerebellum and surrounding regions
A: Midbrain .
B: Pons.
C: Medulla.
D: Spinal cord.
E: 4th ventricle.
F: Arbor vitae.
G: Tonsil.
H: Anterior lobe.
I: Posterior lobe.
Cerebellum and surrounding regions; sagittal view of one hemisphere. A: Midbrain. B: Pons. C: Medulla. D: Spinal cord. E: Fourth ventricle. F: Arbor vitae. G: Tonsil. H: Anterior lobe. I: Posterior lobe.

20. Functions
Balance
Motor Skill

21. Regions of the Brain
Telencephalon
Diencephalon
Brain stem
Cerebellum

22. Ventricles and Location of the Cerebrospinal Fluid

24. Ventricles and Location of the Cerebrospinal Fluid

25. Diencephalon
Thalamus
Hypothalamus
Epithalamus

27. Regions of the Brain
Telencephalon
Diencephalon
Brain stem
Cerebellum

28. Basal ganglia

29. Lobes of the Cerebral Cortex (lateral surface)
Frontal lobe
Parietal lobe
Temporal Lobe
Occipital lobe

30. Specialized Area of the Cerebrum

31. Cerebral White Matter
Corpus callosum

32. Cerebral White Matter
Internal capsule

33. Anatomy of the Nervous System
Peripheral nervous system (PNS)
Nerve outside the brain and spinal cord

35. The 12 pairs of cranial nerves

36. Spinal Nerves 31 pairs

37. Spinal Nerves

38. Dorsal ramus

39. Ventral ramus

40. Fig The approximate segmental distribution of the cutaneous nerves on the front of the trunk. The contribution from the first thoracic spinal nerve is not shown and the considerable overlap that occurs between adjacent segments is not indicated.

41. The segmental innervation of anterior surface of trunk

42. Spinal nerve plexus

43. The Cervical Plexus
Deep in the neck under the sternocleidomastoid muscle
Formed by first 4 cervical nerves (C1 – C4)
Most are cutaneous nerves
Phrenic nerve – major nerve

44. The Cervical Plexus (C1 – C4)

45. Brachial plexus (C5 -T1)

47. Lumbar Plexus

48. Sacral Plexus

49. The Lumbar Plexus
The Sacral Plexus