( ( ( The Skeletal ) and ) ( Muscle ( Systems C. ) ) )
(ROOT (NP (NP (DT The) (NN Skeletal)) (CC and) (NP (NNP Muscle) (NNPS Systems) (NNP C.))))
The Skeletal and Muscle Systems C.
(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.