Closure of the mitral and tricuspid valves.

Closure of the aortic and pulmonary valves.

Ventricular filling.

Retrograde flow in the vena cava

Renal tubules

Cardiac muscle

Intestine

Choroid plexus

-30^o to +110^o

+30^o to -110^o

-150^o to +110^o

-150o to +110o

Quinine

Glutamic acid

Sodium chloride

Glucose