Usha is giving a presentation on the cardiovascular system. One of her slides shows a diagram of the blood moving from the heart
to the arms and legs. Which type of circulation is the slide illustrating? systemic circulation
pulmonary circulation
systolic circulation
diastolic circulation
</span>The systolic blood circulation is the process when the heart contracts., the oxygen-rich blood from the heart is pumped out into the arteries, from where it is sent to all the body parts. <span>The node which initiates the contraction through a nerve signal is called the AV node.</span>
