Accessory muscles are isointense to skeletal muscle on all pulse sequences and typically attach by muscular or tendinous insertions. Accessory muscles around the knee include the 3 rd head of the gastrocnemius, the accessory plantaris, the accessory popliteus, and the tensor fasciae suralis muscle.
Napster was founded by Shawn Fanning, John Fanning, and Sean Parker. Initially, Napster was envisioned as an independent peer-to-peer file sharing service by Shawn Fanning. The service operated between June 1999 and July 2001.
After creation of ferrocerium, many manufacturers around the world started creating their own lighter design using naphtha, gasoline and kerosene. One of the first popular models of lighters came from company Ronson, which started produced large quantities of their Pist-O-Liter (1910) and Wonderlite (1913). They both used naphtha as a fuel source.