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Brain, Superior View Labels 1. frontal lobe 2. parietal lobe 3. occipital lobe 4. temporal lobe 5. central sulcus (precentral gyrus -- the primary motor area -- just anterior to sulcus, postcentral gyrus -the primary somatosensory area -- just posterior sulcus) 6. longitudinal fissure 7. vermis of the cerebellum 8. left hemisphere of cerebellum 9. right hemisphere of cerebellum 10. spinal cord Sheep brain, inferior view Labels 1. olfactory bulb 2. olfactory tract 3. optic chiasma (In an intact animal, projecting forward from the chiasma are the optic nerves. They are cut in these specimens.) 4. optic tract 5. pituitary gland 6. mammillary bodies 7. cerebral peduncles 8. pons 9. medulla 10. spinal cord Brain, Cross Section Labels 1. corpus callosum 2. fornix note: the fluid filled space between the corpus collosum and the fornix is a lateral ventricle. Within each ventricle is a special network of capillaries called choroid plexus, which looks like lint trapped in the ventricle. The choroid plexus works as a special filter for cerebrospinal fluid. 3. thalamus note: between the thalamus and the fornix, and also running vertically through the middle of the thalamus, is the third ventricle. See the note above. 4. hypothalamus, with mammillary body just to right of label 5. optic chiasma 6. pineal gland (body) 7. superior colliculus of corpora quadrgemina 8. inferior colliculus of corpora quadrigemina 9. cerebellum, showing arrangement of gray and white matter called "arbor vitae" 10. cerebral peduncles 11. pons 12. medulla 13. spinal cord (look closely to see the central canal of spinal cord) 14. cerebrum 15. fourth ventricle (fluid filled space between the cerebellum and medulla) 16. cerebral aqueduct (a channel for cerebrospinal fluid to move from the third ventricle to the fourth ventricle Brain, emphasizing corpora quadrigemina and pineal gland Labels 1. pineal gland (body) 2. superior colliculi of corpora quadrigemina 3. inferior colliculi of corpora quadrigemina 4. vermis of cerebellum 5. occipital lobe of cerebrum 6. Bud's gloved thumb
