( It ( ( ( ( is ( named for ) ) and ) ( is ( important ( in ( ( the regulation ) ( of ( ( ( the estrous ) and ) ( menstrual ( female ( reproductive cycles ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VP (VBZ is) (VP (VBN named) (PP (IN for)))) (CC and) (VP (VBZ is) (ADJP (JJ important) (PP (IN in) (NP (NP (DT the) (NN regulation)) (PP (IN of) (NP (NP (DT the) (NNS estrous)) (CC and) (NP (JJ menstrual) (JJ female) (JJ reproductive) (NNS cycles))))))))) (. .)))
It is named for and is important in the regulation of the estrous and menstrual female reproductive cycles.
(ROOT (S (NP (JJ Menstrual) (NN cycle)) (VP (VBZ is) (NP (NP (DT the) (NN name)) (PP (IN for) (NP (NP (DT a) (NN series)) (PP (IN of) (NP (NP (NNS changes)) (PP (IN in) (NP (NP (DT the) (JJ reproductive) (NN system)) (PP (IN of) (NP (JJ mature) (NNS females))))))))) (SBAR (WHNP (WDT that)) (S (VP (VBZ repeats) (NP (NP (DT every) (NN month)) (PP (IN on) (NP (NN average))))))))) (. .)))