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Diencephalon, Thalamus, and Cerebellum BLOCK 3 Diana Sarko, Ph.D. Room 150 Phone #: (864) 327-9847 [email protected] Structures to ID for Anatomy Lab: Diencephalon “Gross” Structures, Lab 3.05a • Diencephalon & Surrounding Landmarks – – – – – – – – – – – – – – – – Lamina terminalis Mamillary body Infundibulum Tuber cinereum Optic nerve Optic chiasm Optic tract Thalamus Massa intermedia (Interthalamic adhesion) Hypothalamic sulcus Hypothalamus Interventricular foramen 3rd ventricle Anterior commissure Posterior commissure Pineal gland __________ #1 #3 #4 #5 Type of cut? #2 Diencephalon Thalamus Massa intermedia Hypothalamus Mid-sagittal Pineal Gland _________ #1 #2 #3 #5 #4 Type of cut? Diencephalon Interventricular Foramen Posterior Commissure Anterior Commissure Lamina Terminalis Mid-sagittal 3rd Ventricle __________ #1 #5 #4 Type of cut? #2 #3 View? Diencephalon Infundibular Stalk Optic Chiasm Infundibulum Mid-sagittal Mamillary Body Tuber cinereum Ventral/Inferior #1 #4 #2 #3 Ventral #5 Optic nerve (CN II) Infundibulum Optic chiasm Optic tract Ventral Mamillary Bodies • Cerebellum “Gross Lab” Structures: 3.05a Cerebellum – – – – – – – – Folium (Folia) Vermis Lateral hemisphere Primary fissure Posterolateral fissure Anterior lobe Posterior lobe Flocculonodular lobe • • Flocculus Nodulus – – Superior medullary velum Tonsil – – – Inferior cerebellar peduncle Middle cerebellar peduncle Superior cerebellar peduncle – Deep cerebellar nuclei • Dentate nucleus (only one observable at a gross level without stained sections) _________ #1 #2 #3 Cerebellum Anterior Lobe Posterior Lobe Anterior Lobe Flocculonodular Lobe Posterior Lobe Cerebellum ______ _________ #1 #2 #3 Cerebellar Peduncles SCP MCP ICP ____________ #2 #1 #3 #4 #6 #5 Cerebellum Vermis Nodulus Paravermis Flocculus Lateral Hemisphere Tonsil Superior Medullary Velum Inferior medullary vellum #2 #6 #5 #4 Anterior lobe Primary fissure Posterior lobe Superior medullary Flocculonodular velum lobe Mid-sagittal Posterolateral fissure Cerebellar nuclei Horizontal _______________________________________________________ #2 #1 #3 #4 #6 #5 Dentate nuclei Cerebellum Lab Structures to ID in Stained Sections: Lab 3.05b • Cerebellum: Stained sections • Folium (plural: Folia) • • • Inferior cerebellar peduncle Middle cerebellar peduncle Superior cerebellar peduncle • Cerebellar cortex • • • • Molecular layer Purkinje cell layer Granule cell layer Deep cerebellar nuclei • • • • Fastigial nucleus Globose nucleus Emboliform nucleus Dentate nucleus ___________________ #1 _______________________ #2 ______________________ #3 Cerebellar Cortex Molecular layer Purkinje cell layer Granule cell layer __________________ #1 Rostral Medulla Inferior cerebellar peduncle #1 #2 #3 #4 #5 #6 Fastigial Nucleus Globose Nucleus Globose Nucleus Emboliform Nucleus Dentate nucleus Dentate nucleus #1 ______________ ________________ #2 ________________ #3 Superior cerebellar peduncle Inferior cerebellar peduncle Middle cerebellar peduncle Caudal Pons #1 ___________ _________________ #2 Superior cerebellar peduncle Middle cerebellar peduncle Mid Pons ______________ #1 _______________ #2 Rostral Pons Superior cerebellar peduncle Middle Cerebellar Peduncle • Lab 3.05b Structures to ID : Thalamic Nuclei in Stained Sections Thalamic nuclei – – – – – – – – – – – – – Internal medullary lamina Pulvinar Medial geniculate nucleus (MGN) Lateral geniculate nucleus (LGN) Ventral posterior lateral (VPL) nucleus Ventral posterior medial (VPM) nucleus Ventral lateral nucleus Ventral anterior nucleus Lateral dorsal nucleus Lateral posterior nucleus Dorsal medial nucleus Anterior nucleus Central median nucleus #1 #15 #14 #2 #13 #12 #3 #4 #11 #5 #10 #6 #8 #7 #9 These are the exact slides you would see on your exam for thalamus and cerebellum stained sections Level of section (anterior/posterior) will not be indicated ________________________ #1 #2 #3 #4 Anterior Nucleus Ventral anterior nucleus (VA) Internal medullary lamina Dorsal medial nucleus ____________________ #1 #2 #3 #4 Lateral dorsal nucleus Ventral lateral nucleus Internal medullary lamina Dorsal medial nucleus ________________ #1 #2 #3 #4 Lateral posterior nucleus Internal medullary lamina Ventral lateral nucleus Dorsal medial nucleus _________________ #1 #2 #3 #4 #5 #6 Lateral posterior nucleus Ventral posterior lateral nucleus Ventral posterior medial nucleus Central median nucleus Lateral geniculate nucleus (LGN) Medial geniculate nucleus (MGN) ______________ #1 Pulvinar Mix’n It Up #1 #2 #3 #4 #5 #6 #7 #8 #9 #10 #11 #12 #13 #14 #15 #16 #17 #18 #19 #11: Anterior Nucleus #14: Ventral anterior nucleus (VA) #17: Internal medullary lamina #4: Dorsal medial nucleus #5: Lateral dorsal nucleus #12: Ventral lateral nucleus #7: Internal medullary lamina #16: Dorsal Medial nucleus #15: Lateral posterior nucleus #19: Internal medullary lamina #9: Ventral lateral nucleus #13: Dorsal medial nucleus #3: Lateral posterior nucleus #6: Ventral posterior lateral nucleus #18: Ventral posterior Medial nucleus #10: Central median nucleus #8: geniculate nucleus (LGN) #1: Medial geniculate nucleus (MGN) #2: Pulvinar