( ( ( The ( normal functioning ) ) ( of ( the ( nervous system ) ) ) ) ( ( is ( controlled ( by ( ( specific signals ) ( ( sent ( through ( the body ) ) ) ( by ( ( ( ( chemical and ) electrical ) mechanisms ) ( -LRB- ( ( nerve impulses ) -RRB- ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ normal) (NN functioning)) (PP (IN of) (NP (DT the) (JJ nervous) (NN system)))) (VP (VBZ is) (VP (VBN controlled) (PP (IN by) (NP (NP (JJ specific) (NNS signals)) (VP (VBN sent) (PP (IN through) (NP (DT the) (NN body))) (PP (IN by) (NP (NP (UCP (NN chemical) (CC and) (JJ electrical)) (NNS mechanisms)) (PRN (-LRB- -LRB-) (NP (NN nerve) (NNS impulses)) (-RRB- -RRB-))))))))) (. .)))
The normal functioning of the nervous system is controlled by specific signals sent through the body by chemical and electrical mechanisms(nerve impulses).
(ROOT (S (NP (DT The) (JJ nervous) (NN system)) (VP (VBZ sends) (NP (JJ electrical) (NNS signals)) (PP (TO to) (NP (DT all) (JJ other) (NN body) (NNS systems)))) (. .)))
The nervous system sends electrical signals to all other body systems.