MATH 190 Lecture Notes - Lecture 8: Cerebral Veins, Optic Canal, Hematoma
Document Summary
Basic topography of the brain & cranial nerves. Cns & pns are anatomically & functionally continuous. Cns = 31 paired spinal & 12 paired cranial nerves. *note: need to know names & numbers cranial nerves & foramen. Brain & spine connect at foramen magnum. Skull contains holes where blood vessels/nerves pass. Terminology for position is relative: caudal near tail, rostral near nose i. e. cerebellum is caudal & dorsal to pons. Only 2 cranial nerves not in brainstem olfactory & optic. Trigeminal ganglion located inside meckel"s cave: ganglion cluster of cell bodies in pns, nucleus cluster of cell bodies in cns. Cranial vault base of skull where brain sits. 3 cranial fossae : anterior fossa, middle fossa, posterior fossa. Bone of skull has 3 layers: 2 x cortical bone, diploe spongy bone. Inside subarachnoid space: projections of connective tissue & vessels look like spider legs so called arachnoid, contains csf. Pia mater is in close contact w/ cerebrum can"t be separated.
