PSY 320 Chapter Notes - Chapter 1: Peripheral Nervous System, Psych, Skeletal Muscle
Document Summary
Exerts control over body through interactions with pns. The cns receives sensory info from receptors via the pns and controls the muscles and other effectors organs via the pns: cns has two major divisions. The bran is the part of the cns that is located in the skull and the spinal cord is part of cns in the spine. Spinal card has four regions: cervical, thoracic, lumbar and sacral. They correspond to the four regions of the spine: the spinal cord performs three functions which are simple compared to that of the (cid:271)rain"s fun(cid:272)tions. Receives signals from the sensory fibers of the pns and conducts them to the brain for complex analysis. Recieves signals from the brain and conducts them to the motor fibers of the pbs. May perform the simple rapid analyses that mediate many of our reflexive responses ex: withdrawing hand from hot stove: pns has two major divisions.
