Throughout a cardiac cycle, the pressure in the right ventricle is less than the pressure in the right atrium and also less than the pressure in the pulmonary artery. Which row is correct?
- Aatrioventricular valve: closed; semilunar valve: closed
- Batrioventricular valve: closed; semilunar valve: open
- Catrioventricular valve: open; semilunar valve: closed
- Datrioventricular valve: open; semilunar valve: open