( ( In ( simplified terms ) ) ( ( a concussion ) ( ( occurs ( when ( ( the brain ) ( is ( ( ( ( ( jarred or ) knocked ) ( against ( ( The cranium ) ( -LRB- ( ( skull bone ) -RRB- ) ) ) ) ) , ) ( resulting ( in ( swelling ( of ( the brain ) ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (PP (IN In) (NP (VBN simplified) (NNS terms))) (NP (DT a) (NN concussion)) (VP (VBZ occurs) (SBAR (WHADVP (WRB when)) (S (NP (DT the) (NN brain)) (VP (VBZ is) (VP (VBN jarred) (CC or) (VBN knocked) (PP (IN against) (NP (NP (DT The) (NN cranium)) (PRN (-LRB- -LRB-) (NP (NN skull) (NN bone)) (-RRB- -RRB-)))) (, ,) (S (VP (VBG resulting) (PP (IN in) (NP (NP (VBG swelling)) (PP (IN of) (NP (DT the) (NN brain)))))))))))) (. .)))
In simplified terms a concussion occurs when the brain is jarred or knocked against The cranium (skull bone), resulting in swelling of the brain.
(ROOT (S (NP (NP (NNP Cranium)) (PRN (-LRB- -LRB-) (NP (NN skull)) (-RRB- -RRB-))) (VP (VBZ is) (NP (NP (DT the) (NN term)) (PP (IN for) (NP (NP (DT the) (JJ skeletal) (NN structure)) (PP (IN of) (NP (NP (DT the) (NN head)) (SBAR (WHNP (WDT that)) (S (VP (VP (VBZ supports) (NP (DT the) (NN face))) (CC and) (VP (VBZ protects) (NP (DT the) (NN brain)))))))))))) (. .)))