It would be everyone's best interest for Carla to bring this major outright fellony to the attention of her boss or other appreciate supervisor quietly letting them know she needed the file for the continuation of work, hopefully it was necessary for employer. I think too and often others in society have not developped moral and stay stuck in serving their own immediate action interest.
Communication skills, Respect, and loyalty
Short answer:
Valve which permits blood to flow from the right atrium to the right ventricle is tricuspid valve
Long answer:
The right side of the heart has lower pressure compare to the left side. There is a valve that support the lower pressure so the blood can move easily from the right atrium to the left ventricle. The valve is called tricuspid valve. It's called "Tri" because there are 3 flaps/leaflets on the valve.
For your information, the left side of the heart only has 2-leaflet valve, which make smaller circular opening compare to the 3-leaflet valve on the right side. That's because the left side has higher pressure than the right side.
