A derecho (/dÉËreÉªtÊoÊ/, from Spanish: derecho [deËÉ¾etÊo], straight) is a widespread, long-lived, straight-line wind storm that is associated with a land-based, fast-moving group of severe thunderstorms. Derechos can cause hurricane-force winds, tornadoes, heavy rains, and flash floods.
In human anatomy, a hamstring is one of the three posterior thigh muscles in between the hip and the knee. In quadrupeds, the hamstring is the single large tendon found behind the knee or comparable area.
What is a hamstring strain? The hamstring muscle group consists of three separate muscles; the semitendinosus, semimembranosus and biceps femoris. They originate from the lower part of the pelvis and insert into the back of the shin bone. When contracting they mainly bend the knee and extend (straighten) the hip joint.