The systolic part of the heart (cardiac) cycle is when the heart muscle contracts and the heart chambers pump blood out to the lungs and the rest of the body.

Current as of: February 20, 2015

Author: Healthwise Staff

Medical Review: Rakesh K. Pai, MD, FACC - Cardiology, Electrophysiology & Stephen Fort, MD, MRCP, FRCPC - Interventional Cardiology