( ( 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 (NP (DT The) (JJ right) (NN atrium)) (PP (IN of) (NP (DT the) (NN heart)))) (VP (VBZ receives) (SBAR (S (NP (DT the) (NN blood)) (VP (VBZ is) (VP (VBN pumped) (PP (IN from) (NP (NP (NNS veins)) (PP (IN of) (NP (DT the) (JJ systemic) (NN circuit)))))))))) (. .)))