( ( Constriction ( of ( the ( afferent arterioles ) ) ) ) ( ( ( ( causes ( ( a decrease ) ( in ( the ( intraglomerular pressure ) ) ) ) ) , ) ( ( reducing GFR ) proportionally ) ) . ) )
(ROOT (S (NP (NP (NNP Constriction)) (PP (IN of) (NP (DT the) (JJ afferent) (NNS arterioles)))) (VP (VBZ causes) (NP (NP (DT a) (NN decrease)) (PP (IN in) (NP (DT the) (NN intraglomerular) (NN pressure)))) (, ,) (S (VP (VBG reducing) (NP (NNP GFR)) (ADVP (RB proportionally))))) (. .)))
Constriction of the afferent arterioles causes a decrease in the intraglomerular pressure, reducing GFR proportionally.
(ROOT (S (S (VP (VBG Reducing) (NP (NP (DT the) (NN number)) (PP (IN of) (NP (NP (NNS molecules)) (PP (IN in) (NP (DT a) (JJ rigid) (NN container)))))))) (VP (VBZ causes) (NP (NN pressure)) (S (VP (TO to) (VP (VB decrease))))) (. .)))