Physiology 2130 Chapter Notes -Heavy Object, Peripheral Nervous System, Reflex Arc
15 Dec 2012
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Module 6 online notes (sec 6. 1 to 6. 54) Nervous system consists of the central nervous system (cns) and peripheral nervous system (pns) Cns is made up of the brain and spinal cord. Nerves outside the cns that go to muscles and organs (heart) are part of pns. Pns can be divided into somatomotor (going to skeletal muscles) and autonomic (going to other organs) nervous systems. There are two cerebral hemispheres (left and right hemisphere) Left hemisphere sends signals to activate muscles on right side of body. Similarly, sensory information from right side goes to left hemisphere. Right hemisphere and left side same thing but vice versa. Brain stem controls most of the basic functions of the body (heart rate, respiration, etc,) The brain stem is made up of the midbrain, pons, and medulla oblongata. Medulla is continuous with the spinal cord.
