( ( The ( central ( nervous system ) ) ) ( ( acts ( like ( ( a telephone ) ( ( switchboard , ) ( ( sending ( ( electrical messages ) ( along ( the nerves ) ) ) ) ( to ( ( various parts ) ( of ( the body ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (JJ central) (JJ nervous) (NN system)) (VP (VBZ acts) (SBAR (IN like) (S (NP (DT a) (NN telephone)) (VP (VBD switchboard) (, ,) (S (VP (VBG sending) (NP (NP (JJ electrical) (NNS messages)) (PP (IN along) (NP (DT the) (NNS nerves)))) (PP (TO to) (NP (NP (JJ various) (NNS parts)) (PP (IN of) (NP (DT the) (NN body))))))))))) (. .)))
The central nervous system acts like a telephone switchboard, sending electrical messages along the nerves to various parts of the body.
(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.