Lecture 14. CNS – Gross Anatomy Bio-5 Anatomy JPHubbard Hartnell College. Brain: 4 regions 12 pairs Cranial nerves Spinal Cord Begins at foramen magnum ~18 inches Cervical/thoracic/lumbar Cervical + lumbar enlargements Conus medullaris – tapered end 31pairs spinal nerves
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CNS – Gross Anatomy
Coverings of CNS: Meninges
Posterior median sulcus
Autonomic (in lateral horn)
Dorsal Root Ganglion – cell bodies of sensory neurons
Ventral root - outgoing motor fibers
Mixed nerves – sensory + motor information
Longitudinal fissure (green) (where?)____________________.
Central sulcus (yellow)
precentral & postcentral gyrus
Lateral sulcus (blue)
InsulaLobes and Fissures
Basal Nuclei (where?)____________________.
Brain Stem (where?)____________________.
Medulla Oblongata (where?)____________________.