Thursday, July 2, 2015

SYMPATHETIC NERVOUS SYSTEM



The peripheral nervous system is divided into the sensory somatic nervous system and the autonomic nervous system. The sensory nervous system controls the voluntary actions of our skeletal muscles, while the autonomic nervous system controls the involuntary actions of our cardiac muscles, smooth muscles, and glands.




Prepares the body for emergency or to react to a stressful situation.
"fight or flight" situation


In the sympathetic nervous system, the ganglia are grouped in a long chain just outside the spinal cord. When the ganglia receive the right "emergency" impulse from the spinal cord, the entire body reacts. All organs are on alert and ready at the same time







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