1. Brain

2. CNS Development

3. Regions of the Brain Cerebral hemispheres Diencephalon Brain stem
Cerebellum

4. Brain Stem Parts of the brain stem Midbrain Pons Medulla oblongata
Slide 7.38a

5. 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)

6. Medulla oblongata
Fig A sagittal section of the brain. (Photograph by Kevin Fitzpatrick on behalf of GKT School of Medicine, London.) 6

8. Medulla Oblongata functions
Includes important fiber tracts
Contains important control centers
Heart rate control
Blood pressure regulation
Breathing
Swallowing
Vomiting
Slide 7.41

9. Pons
Fig A sagittal section of the brain. (Photograph by Kevin Fitzpatrick on behalf of GKT School of Medicine, London.) 9

12. Pons Mostly composed of fiber tracts
Includes nuclei involved in the control of breathing

13. Brain Stem Parts of the brain stem Midbrain Pons Medulla oblongata
Slide 7.38a

14. Midbrain Mostly composed of tracts of nerve fibers
Reflex centers for vision and hearing
Cerebral aquaduct
Substantioa nigra
Slide 7.39

18. Cerebellum 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)

20. Functions
Balance

21. Motor Skill

22. Ataxia
Tremor

23. Cerebellum and surrounding regions; sagittal view of one hemisphere
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.