1.5 Minimum Cost Analyses. A similar, but different problem is the determination of the point of minimum total cost. Instead of balancing two methods with different fixed and variable costs, the aim is to bring the sum of two costs to a minimum.
The tricuspid valve forms the boundary between the right ventricle and the right atrium. Deoxygenated blood enters the right side of the heart via the inferior and superior vena cava.
There are four heart valves: 1  Tricuspid valve: located between the right atrium and the right ventricle. 2  Pulmonary valve: located between the right ventricle and the pulmonary artery. 3  Mitral valve: located between the left atrium and the left ventricle.s the left ventricle contracts, the aortic valve closes and the mitral valve opens, to allow blood to flow from the left atrium into the left ventricle. Initially, unoxygenated blood from the body collects in the right atrium. It then flows to the right ventricle through the tricuspid valve.