Revocation of probation is an integral part of the sentencing process; a defendant is entitled to assistance of counsel at parole or probation revocation hearings without regard to whether the hearing occurs in a withheld sentence or a postsentence situation. Oestrich v. State, 55 Wis. 2d 222, 198 N.W.2d 664 (1974).
The venae cavae (from the Latin for hollow veins, singular vena cava) are two large veins (venous trunks) that return deoxygenated blood from the body into the heart. In humans there are the superior vena cava and the inferior vena cava, and both empty into the right atrium.
As blood passes out of the capillary beds of the body it is collected by veins that return the deoxygenated blood to the heart. The superior and inferior vena cavae return deoxygenated venous blood to the right atrium of the heart. Heart valves function to ensure a one-way flow of blood through the heart. The valves are not made of muscle, but rather are composed of sheets of tough connective tissue (leaflets) that act like flaps.