( ( ( ( ( respiratory system ) ( ( ( ( the ( breathing system ) ) , ) ( including ( ( the ( lungs ( and ( air passages ) ) ) ) ( -LRB- ( ( ( trachea or ) ( windpipe ( , ( larynx ( , ( mouth ( , ( and nose ) ) ) ) ) ) ) ) -RRB- ) ) ) ) ) , ) ) ( as ( well as ) ) ) ( ( the ( associated system ) ) ( of ( nerves ( and ( circulatory supply ) ) ) ) ) ) . )
(ROOT (NP (NP (NP (JJ respiratory) (NN system)) (NP (NP (DT the) (NN breathing) (NN system)) (, ,) (PP (VBG including) (NP (NP (DT the) (NNS lungs) (CC and) (NN air) (NNS passages)) (PRN (-LRB- -LRB-) (NP (NP (NN trachea)) (CC or) (NP (NN windpipe) (, ,) (NN larynx) (, ,) (NN mouth) (, ,) (CC and) (NN nose))) (-RRB- -RRB-)))) (, ,))) (CONJP (RB as) (RB well) (IN as)) (NP (NP (DT the) (JJ associated) (NN system)) (PP (IN of) (NP (NNS nerves) (CC and) (NN circulatory) (NN supply)))) (. .)))
respiratory system the breathing system, including the lungs and air passages (trachea or windpipe, larynx, mouth, and nose), as well as the associated system of nerves and circulatory supply.
(ROOT (S (NP (NNP Narrow) (NN air) (NNS passages)) (VP (VBP make) (S (VP (VBG breathing) (ADJP (JJ difficult) (RB due) (S (VP (TO to) (VP (VB respiratory) (NP (NN system) (NN disease))))))))) (. .)))