unit 2, group 3: Sam, Yugjeet, and Lesli

Question 1

Phase 1 cardiac cycle (with ECG)

Answer 1

Atrial Systole AV valves are open. Atria are depolarizing and pumping blood into ventricles. P wave & EDV is at the end.

Question 2

Phase 2

Answer 2

Isovolumetric contraction- AV valves close due to more pressure in the ventricles. Ventricular depolarization and QRS complex.

Question 3

Phase 3

Answer 3

Rapid ejection increase pressure open semi lunar valves ventricles still depolarizing.

Question 4

Phase 4

Answer 4

Reduced ejection which gives us our stroke volume. End of ventricular systole.

Question 5

phase 5

Answer 5

Isovolumeteric relaxation S2 here due to closing of semi lunar valves. End systolic volume.

Question 6

Phase 6

Answer 6

Rapid ventricular filling- increase pressure of venous blood open AV valve and atria and ventricles fill with blood.