systole: the contraction of the chambers of the heart (especially the ventricles) to drive blood into the aorta and pulmonary artery
pulse: the rhythmic contraction and expansion of the arteries with each beat of the heart
southern red oak: large round-topped deciduous tree with spreading branches having narrow falcate leaves with deeply sinuate lobes and wood similar to that of northern red oaks; New Jersey to Illinois and southward