( ( In addition ) ( , ( ( the ( respiratory system ) ) ( ( ( plays ( ( an ( important role ) ) ( in thermoregulation ) ) ) ( -LRB- ( ( maintaining ( normal ( body temperature ) ) ) -RRB- ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (NN addition))) (, ,) (NP (DT the) (JJ respiratory) (NN system)) (VP (VBZ plays) (NP (NP (DT an) (JJ important) (NN role)) (PP (IN in) (NP (NN thermoregulation)))) (PRN (-LRB- -LRB-) (S (VP (VBG maintaining) (NP (JJ normal) (NN body) (NN temperature)))) (-RRB- -RRB-))) (. .)))
In addition, the respiratory system plays an important role in thermoregulation (maintaining normal body temperature).
(ROOT (S (NP (NNP Thermoregulation)) (VP (VBZ is) (NP (NP (DT the) (NN process)) (SBAR (WHNP (WHADVP (WRB when)) (NNS animals)) (S (VP (VBP maintain) (NP (DT an) (JJ internal) (NN temperature))))))) (. .)))