Explain the cardiac cycle and factors affecting cardiac output

The cardiac cycle is a sequence of events that occur in the heart during one heartbeat. It consists of two main phases: systole (contraction) and diastole (relaxation). During systole, the _________ _________ _______ ____ ________.
______ ______ ____ ________ ______ _______.
_____ ___ _________ ________ _____ __________ ___ __________ ___ _______ ____.
___ __________ _____ __________ ______ _____ _________ _____ __________.
____ ____ ______ _____ _____ ______ ____ ______ ____ ________ _________.
___ __________ ___ _____ ________ _____ _______ _________ __________.
________ ___ _______ _____ __________ ________ ___ _________ _____.
______ _______ ____ ________ ____.
_______ __________ _______ _____ _______ ____ ___ ____ ______ ___ ______ _______.
________ _____ _______ ___ _______ ___ __________ _________.
_______ ___ ______ _________ _____ _____ _______ ____.
______ __________ ____ ______ _________ ________ __________ __________.
______ ___ _________ ____ _________ ________ _______ ____ _________ _________.
_______ _____ ____ ___ ________ ___ ____ __________ ____.
_________ ____.
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