( ( ( The connection ) ( of ( ( the ( middle ear ) ) ( with ( the pharynx ) ) ) ) ) ( ( ( adjusts ( ( the pressure ) ( in ( the ( middle ear ) ) ) ) ) ( to ( ( changing ( air pressures ) ) ( outside ( the body ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN connection)) (PP (IN of) (NP (NP (DT the) (JJ middle) (NN ear)) (PP (IN with) (NP (DT the) (NN pharynx)))))) (VP (VBZ adjusts) (NP (NP (DT the) (NN pressure)) (PP (IN in) (NP (DT the) (JJ middle) (NN ear)))) (PP (TO to) (NP (NP (VBG changing) (NN air) (NNS pressures)) (PP (IN outside) (NP (DT the) (NN body)))))) (. .)))
The connection of the middle ear with the pharynx adjusts the pressure  in the middle ear to changing air pressures outside the body.
(ROOT (S (PP (IN In) (NP (DT the) (JJ human) (NN body))) (, ,) (NP (NP (DT the) (NN intersection)) (SBAR (WHADVP (WRB where)) (S (NP (NP (DT the) (NNS paths)) (PP (IN for) (NP (NN air) (CC and) (NN food)))) (VP (VBP cross))))) (VP (VBZ is) (VP (VBN called) (NP (NN pharynx)))) (. .)))