In the first round of testing, they measured the effects of the artificial light on skin that was free of any cosmetic products. In the second round, they looked at the impact on skin that had been exposed to Titanium Dioxide, or Ti02, a common ingredient in personal-care products.
A: Dorsal refers to the back side of the body whereas ventral refers to the front side of the body. When discussing bipeds, these terms are interchangeable with the terms posterior and anterior.. These terms can become confusing when talking about both bipeds and quadrupeds.
Blood passes through the aortic arches down to the ventral blood vessel. Ventral Blood Vessel : (serves as the aorta) receives blood from the aortic arches and delivers it to the brain and the rest of the body through smaller arteries to capillaries to veins and back to the dorsal blood vessel. excretion: the removal of wastes from an organism's body.