The right ventricle receives blood from the right atrium through which valve?

1. Blood flow through the heart follows a fixed one-way pattern maintained by valves. 2. Blood enters the right atrium and then passes into the right ventricle through the opening guarded by the tricuspid valve. 3. Each flap of this valve is attached by chordae tendineae to papillary muscles that prevent backflow during ventricular contraction. 4. The mitral valve is on the left side, and the pulmonary and aortic semilunar valves guard the outflow tracts rather than the right atrioventricular opening. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 19 "The Cardiovascular System: The Heart", section 19.1, p. 835_