( ( Back ( to ( Top Circadian ) ) ) ( ( Rhythms Circadian ) ( ( ( rhythms pertain ) ( to ( ( changes ( in ( body function ) ) ) ( that ( occur ( throughout ( a ( 24-hour period ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (ADVP (RB Back) (PP (TO to) (NP (NNP Top) (NNP Circadian)))) (NP (NNP Rhythms) (NNP Circadian)) (VP (VBZ rhythms) (NP (NN pertain)) (PP (TO to) (NP (NP (NNS changes)) (PP (IN in) (NP (NN body) (NN function))) (SBAR (WHNP (WDT that)) (S (VP (VBP occur) (PP (IN throughout) (NP (DT a) (JJ 24-hour) (NN period))))))))) (. .)))
Back to Top Circadian Rhythms Circadian rhythms pertain to changes in body function that occur throughout a 24-hour period.
(ROOT (S (NP (NP (JJ Regular) (NNS changes)) (PP (IN in) (NP (NN biology) (CC or) (NN behavior))) (SBAR (WHNP (WDT that)) (S (VP (VBP occur) (PP (IN in) (NP (DT a) (CD 24) (NN hour) (NN cycle))))))) (VP (VBP are) (NP (NP (NN part)) (PP (IN of) (NP (DT the) (NN circadian) (NN rhythm))))) (. .)))