( ( In ( terms ( of ( our ( body function ) ) ) ) ) ( , ( serotonin ( ( ( can also ) ( ( affect ( ( the functioning ) ( of ( ( ( ( ( ( our ( cardiovascular system ) ) , ) muscles ) , ) and ) ( various elements ) ) ) ) ) ( in ( the ( endocrine system ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (NP (NNS terms)) (PP (IN of) (NP (PRP$ our) (NN body) (NN function))))) (, ,) (NP (NN serotonin)) (VP (MD can) (ADVP (RB also)) (VP (VB affect) (NP (NP (DT the) (NN functioning)) (PP (IN of) (NP (NP (PRP$ our) (JJ cardiovascular) (NN system)) (, ,) (NP (NNS muscles)) (, ,) (CC and) (NP (JJ various) (NNS elements))))) (PP (IN in) (NP (DT the) (JJ endocrine) (NN system))))) (. .)))
In terms of our body function, serotonin can also affect the functioning of our cardiovascular system, muscles, and various elements in the endocrine system.
(ROOT (S (NP (NP (CD One) (NN function)) (PP (IN of) (NP (DT the) (JJ cardiovascular) (NN system)))) (VP (VBZ is) (S (VP (TO to) (VP (VB transport) (NP (NNS gases)) (PP (IN throughout) (NP (DT the) (NN body))))))) (. .)))
One function of the cardiovascular system is to transport gases throughout the body.