Superior sagittal sinus Falx cerebri Straight sinus Crista galli of the ethmoid bone Tentorium cerebelli Falx cerebelli Pituitary gland

. Superior sagittal sinus Skull Falx cerebri Scalp Occipital lobe Tentorium cerebelli Dura mater Falx cerebelli Transverse sinus Cerebellum Temporal bone Arachnoid mater over medulla oblongata

Skin of scalp Periosteum Bone of skull Periosteal Dura mater Meningeal Superior sagittal sinus Arachnoid mater Pia mater Subdural space Arachnoid villus Blood vessel Subarachnoid space Falx cerebri (in longitudinal fissure only)

Cerebral hemisphere Septum pellucidum Corpus callosum Interthalamic adhesion (intermediate mass of thalamus) Fornix Choroid plexus Thalamus (encloses third ventricle) Interven- tricular foramen Posterior commissure Pineal gland (part of epithalamus) Anterior commissure Corpora quadrigemina Mid- brain Hypothalamus Cerebral aqueduct Optic chiasma Arbor vitae (of cerebellum) Pituitary gland Fourth ventricle Mammillary body Choroid plexus Pons Cerebellum Medulla oblongata Spinal cord

. Posterior Motor Sensory Motor map in precentral gyrus Anterior Sensory map in postcentral gyrus Toes Genitals Jaw Tongue Primary motor cortex (precentral gyrus) Primary somato- sensory cortex (postcentral gyrus) Intra- abdominal Swallowing

Epidural space (contains fat) Pia mater Arachnoid mater Spinal meninges Subdural space Dura mater Subarachnoid space (contains CSF) Bone of vertebra Dorsal root ganglion Body of vertebra

Cervical spinal nerves Cervical enlargement Dura and arachnoid mater Thoracic spinal nerves Lumbar enlargement Conus medullaris Lumbar spinal nerves Cauda equina Filum terminale Sacral spinal nerves

. Dorsal median sulcus Gray commissure Dorsal funiculus Dorsal horn White columns Ventral funiculus Gray matter Ventral horn Lateral funiculus Lateral horn Dorsal root ganglion Spinal nerve Central canal Dorsal root (fans out into dorsal rootlets) Ventral median fissure Ventral root (derived from several ventral rootlets) Pia mater Arachnoid mater Spinal dura mater

. Ligamentum flavum Lumbar puncture needle entering subarachnoid space Supra- spinous ligament L5 Filum terminale S1 Inter- vertebral disc Cauda equina in subarachnoid space Arachnoid matter Dura mater

Lou Gehrig

Franklin Roosevelt

Myelogram