Cardiac Cycle; Best Slide for Presentation

Dive into the intricate details of the cardiac cycle with this comprehensive presentation. Perfect for students, educators, and medical professionals, this slide deck covers all the essential phases of the cardiac cycle, including atrial systole, atrial diastole, isometric contraction, ejection periods, isometric relaxation, and filling phases. Each section is clearly explained with diagrams and key physiological insights. Enhance your knowledge and understanding of how the heart functions with this valuable resource.

1. CARDIAC CYCLE

2. ‘‘Sequence of electrical and mechanical events occuring in heart during a single heart beat.’’ Definition

3. Table of contents 01 04 02 05 03 06 Atrial Systole Atrial Diastole Isometric Contraction Period Ejection Period Isometic Relaxation Period Filling Phase

4. Atrial Systole ( Last Rapid Filling Phase) (Presystole) ○ Pressure ○ Volume ○ 4th Heart Sound 1

5. Atrial Diastole 2 Atrial filling takes place for the next cardiac cycle Duration

6. Isovolumetric Contraction Period 3 Starts with closure of atrio-ventricular valves (Lub) Duration Pressure Ends with opening of semilunar valves

7. Slow Ejection Period Ejection Period Longer duration (0.09) Further decrease in volume of ventricle Ends with the closure of aortic valve Starts with the opening of aortic valve Duration (0.13) 2/3 fall in ventricular volume Rapid Ejection Period 4

8. Protodiastole First stage of ventricular diastole Semilunar valves close (Dub) Duration (0.04) Indicates end of systole and begining of diastole No more changes in heart

9. Isovolumetric Relaxation Period 5 All the valves are closed No change of ventricular volume Duration (0.08)

10. Slow Filling Phase (Diastasis) Filling Phase Almost equal atrial and ventricular pressure 20% filling Duration (0.19) Sudden rush of blood from atria to ventricle 3rd heart sound Mitral valve opens 70% filling Duration (0.11) Rapid Filling Phase 6