Final answer:
An injury to the tricuspid valve would result in a backflow of blood from the right ventricle to the right atrium. The tricuspid and mitral valves are atrioventricular valves, while the aortic and pulmonary valves are semilunar valves.
Step-by-step explanation:
An injury to the tricuspid valve would cause a backflow from the ventricle into the atrium. The tricuspid valve is an atrioventricular valve located between the right atrium and the right ventricle. Its function is to prevent backflow of blood when the heart is pumping. If it were damaged, blood could flow back into the right atrium from the right ventricle during ventricular contraction.
Regarding the valves and the order of blood flow from the vena cava through the heart, the correct sequence is:
- Tricuspid Valve
- Pulmonary Semilunar Valve
- Bicuspid Valve (also known as Mitral Valve)
- Aortic Semilunar Valve
Both the aortic and the pulmonary valves are semilunar valves, which are shaped like half-moons. The aortic valve prevents blood from flowing backwards from the aorta into the left ventricle, and the pulmonary valve prevents blood from flowing backwards from the pulmonary artery into the right ventricle. In contrast, the mitral valve is another atrioventricular valve on the left side of the heart that prevents blood from flowing back from the left ventricle to the left atrium.