the cardiac cycle

Question 1

what occurs during diastole?

Answer 1

heart ventricles relax and fill with blood

Question 2

what occurs during systole?

Answer 2

heart ventricles contract and pump blood into the aorta and pulmonary artery

Question 3

what are the 5 events during the cardiac cycle?

Answer 3

• passive filling (diastole)
• atrial contraction
• ventricular contraction
• ventricular ejection
• isometric ventricular relaxation

Question 4

what percent of the ventricles become full from passive filling?

Answer 4

80%

Question 5

what stage of the cardiac cycle completes the end diastolic volume?

Answer 5

atrial contraction

Question 6

what causes the first heart sound?

Answer 6

closure of the AV valves due to high pressure in the ventricles

Question 7

what causes the second heart sound?

Answer 7

closure of the semi lunar valves

Question 8

what signals the start of systole and diastole?

Answer 8

systole - closure of AV valves

diastole - closure of semi lunar valves

Question 9

what are the 4 auscultation areas?

Answer 9

aortic - 2nd intercostal space adjacent to the sternum on the right

pulmonary - 2nd intercostal space adjacent to the sternum on the left

tricuspid - 4th intercostal space on the left

mitral - 5th intercostal space mid clavicular line on the left

Question 10

what does an elevated JVP reflect?

Answer 10

elevated pressure in the right atrium (central venous pressure)

Question 10

what is a normal JVP

Answer 10

no more than 3 cm vertically above the sternal angle