( ( the ( left ventricle ) ) ( ( ( ( ( receives ( oxygen-rich blood ) ) ( from ( the ( left atrium ) ) ) ) and ) ( ( ( pumps it ) ( to ( the body ) ) ) ( through ( the aorta ) ) ) ) . ) )
(ROOT (S (NP (DT the) (JJ left) (NN ventricle)) (VP (VP (VBZ receives) (NP (JJ oxygen-rich) (NN blood)) (PP (IN from) (NP (DT the) (JJ left) (NN atrium)))) (CC and) (VP (VBD pumps) (NP (PRP it)) (PP (TO to) (NP (DT the) (NN body))) (PP (IN through) (NP (DT the) (NN aorta))))) (. .)))
the left ventricle receives oxygen-rich blood from the left atrium and pumps it to the body through the aorta.
(ROOT (S (NP (DT The) (JJ right) (NN atrium)) (VP (VBZ receives) (NP (JJ oxygen-poor) (NN blood)) (PP (IN from) (NP (DT the) (NN body))) (, ,) (S (ADVP (RB then)) (VP (VBG pumps) (NP (DT the) (NN blood)) (PP (IN into) (NP (DT the) (JJ right) (NN ventricle)))))) (. .)))