Their network of blood vessels is also somewhat different than in humans, as they do not have major blood vessels in their wrists. As a result, a heart attack in the left heart is a very serious matter because the left heart is very difficult to repair.
The left heart is much more complex - this heart is made up of an intricate system of thousands of veins that help cleanse the blood in a manner similar to the human kidneys. The right heart is a solid mass of muscle which provides most of the force behind the body's blood circulation. The cardio-vascular system of Centauri has two hearts instead of the single heart that humans have. The level of pleasure during intercourse increases with the number of insertions. During sexual intercourse the male places the tentacles in the female orifices individually. Females have six narrow receptive orifices, three on either side of the base of the spine, just above the hips. The males can stretch the tentacles out to several feet. Outer reproductive organs of Centauri males are consisting of six tentacle-like genitals that extend out from the sides of the body and "fold" in over the solar plexus when not in use.
During The Third Age of Mankind, the average lifespan of Centauri was around 150 Earth years. The Centauri are bipedal humanoids, in appearance similar enough to Humans that the species could easily pass for one another under casual inspection (apart from distinctive differences in hairstyling and attire).