The first number they have retired is the number 12 in  1984, which represents the 12th Man, the aâ¦mazing fans of the  Seattle Seahawks who year in and year out cause the most false  start penalties in the NFL at Qwest Field and in the Kingdome, and  for their short two year time in Huskies Stadium.
The hamstring group comprises three muscles and their tendons, which originate on the ischial tuberosity (the part of the hip you sit on), flow down the back of the thigh and attach to the front and back of the knee. Like all muscles, the hamstrings are tethered by tendons, in this case to the hip and knee bones.
The hamstring muscles are a group of three muscles located on the back of your thigh. The three muscles are called the biceps femoris, the semimembranosus, and the semitendinosus. These three muscles work together to help bend your knee. They can also help with hip extension, a movement where your hip and thigh move towards the back of your body. The hamstring muscles all arise from a bone on the bottom of your pelvis called the ischial tuberosity.