( ( The ( muscular system ) ) ( ( is ( ( an ( organ system ) ) ( consisting ( of ( skeletal ( , ( smooth ( and ( cardiac muscles ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (JJ muscular) (NN system)) (VP (VBZ is) (NP (NP (DT an) (NN organ) (NN system)) (VP (VBG consisting) (PP (IN of) (NP (JJ skeletal) (, ,) (JJ smooth) (CC and) (JJ cardiac) (NNS muscles)))))) (. .)))
The muscular system is an organ system consisting of skeletal, smooth and cardiac muscles.
(ROOT (S (NP (DT The) (NN motor) (NN system)) (VP (VBZ consists) (PP (IN of) (NP (NP (NNS neurons)) (SBAR (WHNP (WDT that)) (S (VP (VBP carry) (NP (NNS signals)) (PP (TO to) (NP (JJ skeletal) (NNS muscles))))))))) (. .)))
The motor system consists of neurons that carry signals to skeletal muscles.