( ( ( Skeletal ( , ( Muscular ( , ( and ( Integumentary Systems ) ) ) ) ) ) 2 ) . )
(ROOT (NP (NP (NNP Skeletal) (, ,) (JJ Muscular) (, ,) (CC and) (NNP Integumentary) (NNP Systems)) (NP (CD 2)) (. .)))
Skeletal, Muscular, and Integumentary Systems 2.
(ROOT (S (ADVP (RB Together)) (, ,) (NP (DT the) (JJ muscular) (CC and) (JJ skeletal) (NNS organs)) (VP (VBP are) (VP (VBN known) (PP (IN as) (NP (DT the) (JJ musculoskeletal) (NN system))))) (. .)))
Together, the muscular and skeletal organs are known as the musculoskeletal system.