CAPS 301 Lecture Notes - Lecture 14: Reticular Formation, Pia Mater, Dura Mater
15 Oct 2018
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Document Summary
Central nervous system: brain plus spinal cord. Develops from a hollow tube - early on embryologically. Becomes enlarged at one end (rostral) - ultimately becomes the brain. Non-enlarged end (caudal) remains as the spinal cord. Rostral enlargement becomes divided into 3 compartments: Forebrain - which subdivides into telencephalon and diencephalon. Hindbrain - becomes metencephalon (pons) and myelencephalon (medulla) Cerebellum (involved in control of movement) is an outgrowth from the hindbrain. Somite: nerves, muscles, etc, bud off of this. Continuous from head to tail, so if there is any disruption along, there will be a problem. Peripheral nervous system: cranial nerves (from brain), spinal nerves (from spinal cord) Site of highest level of neuronal processing responsible for motor activity, sensory perception, consciousness, etc. Outer layer is cerebral cortex( composed of grey matter) White matter lies below the cortex (myelinated axons arranged in tracts) Releases ability of muscles to allow for a voluntary movement.
