Khan Academy

Autonomic nervous system effects on the heart (K-A)

Myosin and actin (K-A)

New perspective on the heart (K-A)

Sympathetic nerves affect myosin activity (K-A)

Changing the AV node delay – chronotropic effect (K-A)

Permeability and membrane potentials (K-A)

Three types of muscle (K-A)

Active contraction vs. passive recoil (K-A)

Resetting cardiac concentration gradients (K-A)

Changing the heart rate – chronotropic effect (K-A)

Why doesn't the heart rip?-video (K-A)

Thinking about heartbeats (K-A)

Frank-Starling mechanism (K-A)

Getting a new heart (K-A)

Increasing the heart's force of contraction-video (K-A)

Increasing ventricular contractility – inotropic effect (K-A)

Preload and pressure (K-A)

Drawing a pressure-volume loop (K-A)

Preload stretches out the heart cells (K-A)

End diastolic pressure-volume relationship (EDPVR) (K-A)

Sarcomere length-tension relationship (K-A)

End systolic pressure-volume relationship (ESPVR) (K-A)

What is afterload?-video (K-A)

Left ventricular pressure vs. time (K-A)

What is preload?-video (K-A)