Answer 2: Snails are really interesting! Most snails are considered to be hermaphrodites and have both male and female reproductive organs. Snails are able to reproduce when they are 1-year-old (they live to be about 5-7 years old but some as long as 25 years!) at which time they must find a snail partner to mate with.
The posterior descending artery, which is also known as the posterior inter-ventricular artery, is a branch of one of the heart's main arteries. In most people, the posterior descending artery branches away from the right coronary artery, which is called right coronary artery dominance. In left coronary artery dominance, the posterior descending artery branches away from the left circumflex artery.
The artery that supplies the posterior third of the interventricular septum â the posterior descending artery (PDA) determines the coronary dominance. 1  If the posterior descending artery is supplied by the right coronary artery (RCA), then the coronary circulation can be classified as right-dominant.