01:119:116 Lecture Notes - Lecture 20: Frontal Lobe, Parietal Lobe, Homeostasis

• School: Rutgers University
• Department: Biological Science
• Course: 01:119:116
• Professor: Heather Lewis

Document Summary

L20 nervous system organization: comparison of nervous system organization, cnidarians (ex. Hyrda: simplest animal w/ ns, no central control system, nerve net- series of interconnected nerve cells. Immune cells- phagocytic (upkeep: schwann cells- found in pns, plasma membrane- myelin, form sheath around axons, radial glia- found in embryo while developing, form tracks in developing embryo, newly formed neurons migrate from neural tube along tracks. Interneurons- convey info to other motor neurons info to hamstring to relax. Peripheral nervous system- transmits info to & from cns: sensory receptors, nerves, cranial nerves, originate in hind portion of brain b. Innervate head & upper body: spinal nerves, originate in spinal cord b. Sensory association cortex- integrates sensory info i: somatosensory cortex- touch, interprets sensory stimuli from skin body awareness, body part representation. Primary motor & primary somatosensory cortices: neurons arranged according to part of body that generates sensory input or receives motor commands, ex.