( ( The body ) ( also ( ( uses ( saliva ( to ( ( lubricate food ) ( as ( it ( passes ( through ( ( ( ( ( ( the mouth ) , ) pharynx ) , ) and ) esophagus ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (DT The) (NN body)) (ADVP (RB also)) (VP (VBZ uses) (ADJP (JJ saliva) (S (VP (TO to) (VP (VB lubricate) (NP (NN food)) (SBAR (IN as) (S (NP (PRP it)) (VP (VBZ passes) (PP (IN through) (NP (NP (DT the) (NN mouth)) (, ,) (NP (NN pharynx)) (, ,) (CC and) (NP (NNS esophagus)))))))))))) (. .)))
The body also uses saliva to lubricate food as it passes through the mouth, pharynx, and esophagus.
(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)))) (. .)))