Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Coronary artery disease wikipedia , lookup
Cardiac contractility modulation wikipedia , lookup
Electrocardiography wikipedia , lookup
Antihypertensive drug wikipedia , lookup
Hypertrophic cardiomyopathy wikipedia , lookup
Jatene procedure wikipedia , lookup
Ventricular fibrillation wikipedia , lookup
Quantium Medical Cardiac Output wikipedia , lookup
Heart arrhythmia wikipedia , lookup
Atrial fibrillation wikipedia , lookup
Arrhythmogenic right ventricular dysplasia wikipedia , lookup
Year 12 AS Biology: Module 1 Cells, Molecules and Systems Name: Pressure Changes in the Heart: Question Sheet What is the heart rate in beats per minute? At point A, why does the atrial pressure have a slight rise? Why does atrial pressure decrease again 0.1s later? At point B, why does atrial pressure show an increase? At point B, why does ventricular pressure show an increase? Why is this increase less than at point D? Why is pressure highest in the ventricles during ventricular systole than in the atria during atrial systole? Draw a sketch graph to compare pressures in the left and right ventricles during the cardiac cycle Describe which chamber (atrium or ventricle) has a higher pressure at each stage of the cardiac cycle What happens if the pressure if higher in the ventricles than in the atria. At what stage of the cardiac cycle does this happen? At point D, what happens to the ventricular pressure on the left side of the heart? About 0.1 seconds later, what is the effect of this on the semi-lunar valves? During what part of the cardiac cycle does this happen? Why does aortic pressure continue to decrease for about 0.1 seconds even though ventricular systole has started?