NROC90H3 Chapter Notes -Dorsal Root Ganglion, Central Nervous System, Posterior Column
Document Summary
Shared characteristics of vertebrate nss: brain, spinal cord, pattern of neural development (order, bilateral symmetry, cross connectivity (right controls left, longitudinal organization (structures posterior develop first, dorsal (back)/ventral organization of sensory/motor function. Anatomical references: dorsal vs. ventral, rostral vs. caudal, anterior vs. posterior (bipeds, medial (towards midline) vs. lateral (away from midline) Ipsilateral (on same side) vs. contralateral (on opposite) Planes of section: cornal or frontal (rostral from caudal, like bread, sagittal (seperates left from right, horizontal (dorsal from ventral) Divisions of the ns: cns, pns, autonomic ns. Efferent nerves: nerve/tract, verves are bundles of axons within the cns, tracts are bundles of axons within the cns. Cns vs. pns: cns is the brain and spinal cord, pns includes, spinal nerves, cranial nerves, peripheral ganglia. Peripheral nervous system (pns: autonomic nervous system, ans is considered self-governing , innervations of internal organs. Sends motor commands to internal organs: two parts with opposing effects.