( ( The ( right atrium ) ) ( ( ( ( receives ( de-oxygenated blood ) ) ( from ( the ( systemic circulation ) ) ) ) and ) ( ( pumps it ) ( to ( the ( ventricle c. ) ) ) ) ) )
(ROOT (S (NP (DT The) (JJ right) (NN atrium)) (VP (VP (VBZ receives) (NP (JJ de-oxygenated) (NN blood)) (PP (IN from) (NP (DT the) (JJ systemic) (NN circulation)))) (CC and) (VP (VBD pumps) (NP (PRP it)) (PP (TO to) (NP (DT the) (JJ ventricle) (NN c.)))))))
The right atrium receives de-oxygenated blood from the systemic circulation and pumps it to the ventricle c.
(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)))))) (. .)))