Nephritis is the most common cause of blood in the urine of children and young adults but it can occur at any age. If your GP suspects nephritis he will usually refer you to a nephrologist (kidney doctor).
Muscle fiber types can be broken down into two main types: slow twitch (Type I) muscle fibers and fast twitch (Type II) muscle fibers. These fast twitch fibers can be further categorized into Type IIa and Type IIb fibers, which are also known as fast twitch oxidative and fast twitch glycolytic, respectively.
What is the only type of muscle with multinucleated fibers? A: Skeletal muscles are the only type of muscle composed of multinucleated cells. Skeletal muscle cells take form as cylindrical fibers, which contain several different types of cells fused together, resulting in a multinucleated cell. Continue Reading.