Final answer:
Peristaltic waves move the blood within the dorsal blood vessel.
Step-by-step explanation:
The waves that move the blood within the dorsal blood vessel are peristaltic waves. Peristaltic waves are a type of wave that occurs in the smooth muscle walls of the blood vessels. They create a rhythmic contraction and relaxation of the vessel walls, which helps to propel the blood forward.
Peristaltic waves refer to coordinated, rhythmic contractions of smooth muscles that propel contents through tubular structures in the body, such as the digestive tract or certain types of tubes and vessels. These waves are an essential mechanism for the movement of substances along these tubes.