( ( ( ( ( ( Cardiac output ) ( is ( ( the volume ) ( of ( blood ( ( pumped ( by ( the ( left ventricle ) ) ) ) ( into ( ( the aorta ) ( in ( one minute ) ) ) ) ) ) ) ) ) ) , ) and ) ( ( is ( equal ( to ( ( the produce ) ( of ( stroke volume ) ) ) ) ) ) ( x ( heart rate ) ) ) ) . )
(ROOT (S (S (NP (NNP Cardiac) (NN output)) (VP (VBZ is) (NP (NP (DT the) (NN volume)) (PP (IN of) (NP (NP (NN blood)) (VP (VBN pumped) (PP (IN by) (NP (DT the) (JJ left) (NN ventricle))) (PP (IN into) (NP (NP (DT the) (NN aorta)) (PP (IN in) (NP (CD one) (NN minute))))))))))) (, ,) (CC and) (SINV (VP (VBZ is) (ADJP (JJ equal) (PP (TO to) (NP (NP (DT the) (NN produce)) (PP (IN of) (NP (NN stroke) (NN volume))))))) (NP (CD x) (NN heart) (NN rate))) (. .)))
Cardiac output is the volume of blood pumped by the left ventricle into the aorta in one minute, and is equal to the produce of stroke volume x heart rate.
(ROOT (S (NP (NP (DT The) (NN term) (JJ cardiac) (NN output)) (, ,) (VP (VBN calculated) (PP (IN by) (S (VP (VBG multiplying) (NP (NN heart) (NNS contractions)) (PP (IN by) (NP (NN stroke) (NN volume))))))) (, ,)) (VP (VBZ means) (NP (NP (DT the) (NN volume)) (PP (IN of) (NP (NP (NN blood)) (VP (VBN pumped) (PP (IN by) (NP (NP (DT the) (NN heart)) (PP (IN in) (NP (CD one) (NN minute)))))))))) (. .)))
The term cardiac output, calculated by multiplying heart contractions by stroke volume, means the volume of blood pumped by the heart in one minute.