Assertion: ventricular systole | /r/HasProperty | introduced by brief period of contraction
Facets:
value: very
type: DEGREE
Source sentences:
text: Lasting usually 0.3 to 0.4 second, ventricular systole is introduced by a very brief period of contraction, followed by the ejection phase, during which 80 to 100 cc of blood leave each ventricle.