the cardiac cycle follow the events of the cardiac cycle and match them with a graph that shows...

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The Cardiac Cycle Follow the events of the cardiac cycle and match them with a graph that shows changes in pressure within the left side of the heart and the aorta

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Page 1: The Cardiac Cycle Follow the events of the cardiac cycle and match them with a graph that shows changes in pressure within the left side of the heart and

The Cardiac Cycle

Follow the events of the cardiac cycle and match them with a graph that

shows changes in pressure within the left side of the heart and the aorta

Page 2: The Cardiac Cycle Follow the events of the cardiac cycle and match them with a graph that shows changes in pressure within the left side of the heart and

Imagine there are pressure sensors in the left atrium and the left ventricle and the aorta:

Find the lines on the graph for these three places

Page 3: The Cardiac Cycle Follow the events of the cardiac cycle and match them with a graph that shows changes in pressure within the left side of the heart and

aorta

ventricle

atrium

Page 4: The Cardiac Cycle Follow the events of the cardiac cycle and match them with a graph that shows changes in pressure within the left side of the heart and

An electrocardiogram (ECG) for recording electrical activity in the heart

Page 5: The Cardiac Cycle Follow the events of the cardiac cycle and match them with a graph that shows changes in pressure within the left side of the heart and

ECG trace

P QRS T

Page 6: The Cardiac Cycle Follow the events of the cardiac cycle and match them with a graph that shows changes in pressure within the left side of the heart and

Heart sounds – you can hear these with a stethoscope

Page 7: The Cardiac Cycle Follow the events of the cardiac cycle and match them with a graph that shows changes in pressure within the left side of the heart and

Now analyse this graph with a ruler –

Follow the changes as you move it along – keep an eye on the time…..it is along the top….

Page 8: The Cardiac Cycle Follow the events of the cardiac cycle and match them with a graph that shows changes in pressure within the left side of the heart and
Page 9: The Cardiac Cycle Follow the events of the cardiac cycle and match them with a graph that shows changes in pressure within the left side of the heart and
Page 10: The Cardiac Cycle Follow the events of the cardiac cycle and match them with a graph that shows changes in pressure within the left side of the heart and
Page 11: The Cardiac Cycle Follow the events of the cardiac cycle and match them with a graph that shows changes in pressure within the left side of the heart and
Page 12: The Cardiac Cycle Follow the events of the cardiac cycle and match them with a graph that shows changes in pressure within the left side of the heart and
Page 13: The Cardiac Cycle Follow the events of the cardiac cycle and match them with a graph that shows changes in pressure within the left side of the heart and
Page 14: The Cardiac Cycle Follow the events of the cardiac cycle and match them with a graph that shows changes in pressure within the left side of the heart and
Page 15: The Cardiac Cycle Follow the events of the cardiac cycle and match them with a graph that shows changes in pressure within the left side of the heart and
Page 16: The Cardiac Cycle Follow the events of the cardiac cycle and match them with a graph that shows changes in pressure within the left side of the heart and

Now the cycle starts again

Page 17: The Cardiac Cycle Follow the events of the cardiac cycle and match them with a graph that shows changes in pressure within the left side of the heart and
Page 18: The Cardiac Cycle Follow the events of the cardiac cycle and match them with a graph that shows changes in pressure within the left side of the heart and

Note the points in the cycle when the valves open and close – the heart sounds are made by the valves closing