( ( Epithelial tissues ) ( ( ( ( cover ( all ( external ( body surfaces ) ) ) ) and ) ( line ( all ( internal ( ( spaces and ) cavities ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Epithelial) (NNS tissues)) (VP (VP (VB cover) (NP (DT all) (JJ external) (NN body) (NNS surfaces))) (CC and) (VP (VB line) (NP (DT all) (JJ internal) (NNS spaces) (CC and) (NNS cavities)))) (. .)))
Epithelial tissues cover all external body surfaces and line all internal spaces and cavities.
(ROOT (S (NP (NNP Epithelial) (. ?) (NNP tissue)) (VP (VBZ consists) (PP (IN of) (NP (NP (NNS cells)) (SBAR (WHNP (WHNP (WDT that) (NN cover)) (NP (JJ inner) (CC and) (JJ outer) (NN body))) (S (VP (VBZ surfaces))))))) (. .)))