( ( Ventricular ( stroke volume ) ) ( ( ( would simply ) ( be ( ( the ( cardiac output ) ) ( divided ( by ( the ( heart rate ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Ventricular) (NN stroke) (NN volume)) (VP (MD would) (ADVP (RB simply)) (VP (VB be) (NP (NP (DT the) (JJ cardiac) (NN output)) (VP (VBN divided) (PP (IN by) (NP (DT the) (NN heart) (NN rate))))))) (. .)))
Ventricular stroke volume would simply be the cardiac output divided by the 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.