Sectional Anatomy of the Brain Stem
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Describe the relation of the structures in the sections at each level of the brain stem. Discuss some neuro-anatomical terminologies relevant to brain stem. Explain the fuctional components of cranial nerves.
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Sectional Anatomy of the Brain Stem
- 1. Sectional Anatomy of the Brain Stem Dr. Rayhan Shahrear Dept. of Anatomy, BSMMU.
- 2. Objectives • Describe the relation of the structures in the sections at each level of the brain stem. • Discuss some neuro-anatomical terminologies relevant to brain stem. • Explain the fuctional components of cranial nerves. 2
- 3. Alar Basal 3
- 4. 4
- 5. 5
- 6. 6
- 7. 7
- 10. 10 NG FG NC FC MAON SG V ST V LST PSC ASC Medulla at Pyramidal Decussation
- 11. 11 ML IAF Medulla at Medial Lemniscus Decussation
- 12. 12 ICP Medulla at Mid Olive
- 13. 13 Medulla above the Olive
- 14. 14 MCP Pons at Facial Colliculus SCP
- 15. 15 Pons at Trigeminal Nuclei SL
- 16. 16 DSCP TL ML Mid Brain at Inf. Colliculus SL
- 17. 17 Mid Brain at Sup. Colliculus
- 18. 18 SC ONN RN MNT SN TPF CF FP RF III Mid Brain at Sup. Colliculus
- 19. 19 Mid Brain at Inf. Colliculus IC TNN IV
- 20. 20
- 21. 21 Pons at Trigeminal Nuclei PN CS MN V SN V V
- 22. 22 Pons at Facial Colliculus VII VI MN VII N VI
- 23. 23
- 24. 24
- 25. 25 Medulla above the Olive P AN PCN ACN LVN MVN NA N XII DN X MLF TST
- 26. 26 Pons at Facial Colliculus TB
- 27. 27 Pons at Trigeminal Nuclei
- 28. 28 Mid Brain at Inf. Colliculus LL
- 29. 29 Mid Brain at Sup. Colliculus
- 30. 30 Mid Brain at Inf. Colliculus
- 31. 31 Pons at Trigeminal Nuclei
- 32. 32 Pons at Facial Colliculus
- 33. 33 Medulla above the Olive
- 34. 34 NTS X XII Medulla at Mid Olive
- 35. 35
- 36. 36 N XII XII N XI XI Medulla at ML Decussation
- 37. 37 XI N XI PD Medulla at Pyramidal Decussation
- 38. 38 PD MLF
- 39. 39
- 40. 40 Thank You
Editor's Notes
- Brief on the alar and basal plate.
- Spinal cord formation
- Derivatives of alar and basal plate.
- The transformation in GIF.
- Functional components with explanation of nomenclature. GVE = General Visceral Efferent SVE = Special Visceral Efferent GSE = General Somatic Efferent GVA = General Visceral Afferent SVA = Special Visceral Afferent GSA = General Somatic Afferent SSA = Special Somatic Afferent
- Brief on ascending tracts of spinal cord. FG = Fasciculus Gracillis FC = Fasciculus Cuneatus ST = Spino-thalamic tract SC = Spino-cerebellar tract VSC = Ventral Spino-cerebellar tract DSC = Dorsal Spino-cerebellar tract
- Short description on structures as it appears. Posterior tract FG = Fasciculus Gracillis NG = Nucleus Gracillis FC = Fasciculus Cuneatus NC = Nucleus Cuneatus Spinocerebellar tract ASC = Anterior SC PSC = Posterior SC LST = Lateral Spinothalamic tract SG & ST V = Trigeminal ganglia and tract MAON = Medial Accessory Olivery nucleus
- IAF = Internal arcuate fiber ML = Medial lemniscus
- ICP = Inferior Cerebellar peduncle
- SCP = Superior cerebellar peduncle MCP = Middle cerebellar peduncle
- SL = Spinal lemniscus
- DSCP = Decussation of cerebellar peduncle TL = Trigeminal lemniscus ML = Medial lemniscus SL = Spinal lemniscus
- Central grey matter SC = Superior colliculus ONN = III nerve nuclei MNT = Mesencephalic nucleus of trigeminal RN = Red nucleus, it’s decussation, rubrospinal and tectospinal tract SN = Substantia nigra CP = Corticopontine fiber CF = Corticospinal and corticobulbar fiber FP = Frontopontine fiber RF = Reticular formation III = III nerve
- IC = Inferior Colliculus TNN = Trochlear nerve nuclei IV = Trochlear nerve
- PN = Pontine nuclei CS = Corticospinal tract MN & SN V = Motor and Sensory nuclei of V V = Trigeminal nerve
- Abducent nerve nuclei Facial never nuclei VII nerve VI nerve
- P = Pyramid AN = Arcuate nuclei N XII = XII nerve nuclei DN X = Dorsal nuclei of vagus NA = Nucleus ambiguous ACN = Anterior Cochlear nucleus PCN = Posterior Cochlear nucleus MVN = Medial Vestibular nucleus LVN = Lateral Vestibular nucleus MLF = Medial Longitudinal fasciculus TST = Tectospinal tract
- Back tracing of the remaining tracts. TB = Trapezoid body
- LL = Lateral lemniscus
- 1. Lateral lemniscus
- Returning from back tracing.
- XII = XII nerve NTS = Nucleus tractus solitaries X = Formation of vagus
- N XII = XII nerve nuclei XI = XI nerve nuclei XII = XII nerve XI = XI nerve
- PD = Pyramidal decussation N XI = XI nerve nuclei XI = XI nerve
- PD = Pyramidal decussation MLF = Medial longitudinal fasciculus
- 3D model of cranial nerve attachments