The nervous system is divided * SNC ( central nervous system = (Brain and marrow ) * SNP ( 41 peripheral nervous system; = nerves and ganglia outside the SNCEl SNP is divided into SNA and SNSSNA ( 41 autonomic nervous system; on the one hand controls the sensitivity on the other and visceral: cellular nutrition ( trophism ) secretions and the mobility of muscles lisosSNS ( 41 somatic nervous system; controls the superficial and deep sensitivity of the body and the drive to striated muscles
1. State of nutrition of tissues and organs. 2. Confrontation of the nutritive functions by the nervous system. Is derived from the Greek «trophée»: food, nutrition, and the suffix "ISM", from the Latin "ismus", and Greek 'ismós', which means status, quality, physical or moral deficiencies, doctrine, social movement, trend, sporting activities, etc.