The amount of light is referred to as the fluence, which is defined as the total number of photons impinging on a unit surface area. Total fluence = fluence rate × the length of time

TLS Online TPP Program

#Id: 5320

#Unit 7. System Physiology – Animal

Reduced Ventricular Ejection

Left atrial pressure continues to increase as blood returns to the left heart from the lungs.

TLS Online TPP Program

#Id: 5321

#Unit 7. System Physiology – Animal

Reduced Ventricular Ejection

the ventricles begin to repolarize, which is marked by the beginning of the T wave on the ECG.

TLS Online TPP Program

#Id: 5322

#Unit 7. System Physiology – Animal

Isovolumetric Ventricular Relaxation

Left ventricle is relaxed

Left ventricular pressure decreases

TLS Online TPP Program

#Id: 5323

#Unit 7. System Physiology – Animal

 Isovolumetric Ventricular Relaxation

When left ventricular pressure falls below aortic pressure, the aortic valve closes.

TLS Online TPP Program

#Id: 5324

#Unit 7. System Physiology – Animal

Isovolumetric Ventricular Relaxation

Closure of aortic valve producing the second heart sound (S2).

TLS Online TPP Program

#Id: 5325

#Unit 7. System Physiology – Animal

Isovolumetric Ventricular Relaxation

Because all valves are closed again, ventricular volume is constant.