triscupid valve
Yes.
Arteries carry blood away from the heart.
It's a circle, thus there is no first in the long run ... but as the blood 'pools' in the ventricles during each heart beat, then "first flow" is either within the ventricles OR through the main arteries (aortic and pulmonary).
Both AV valves, the bicuspid and tricuspid, (separating the ventricles from the atria) prevent blood from flowing back into the atria when the ventricles contract. Both the semilunar valves (separating the arteries from the ventricles) prevent blood from flowing back from the arteries once it has been pumped out of he ventricles, and thus, out of the heart. The difference is that the AV valves are contracted when they are CLOSED, but the semilunar valves are contracted when OPEN. Otherwise, I can't think of another major job besides preventing backflow.
semilunar
Yes
dont fricken know
There are atrioventricular valves on each side of the heart that keep blood from flowing from the ventricles back up into the atria. There are also semilunar valves that prevent blood from flowing from the pulmonary arteries and aorta back into the right and left ventricles, respectively.
the ventricles are like pumps in the heart and your pacemaker sends them shocks to keep working. ventricles pump blood into arteries.
Veins carry blood to the atria. In contrast, arteries carry blood away from the ventricles.
Arteries
Pulmonary Arteries