An Olympic sprinter readies for a race.After the sound of the starting gun,he propels himself forward from the starting block and immediately grimaces in pain,grabbing for the back of his thigh.Within 48 hours he begins noticing extensive bruising on the back of his thigh extending into the back of the knee.He now has difficulty rising from a seated position and flexing his knee.Bending at the waist generates more pain.Which muscle is likely injured?
A) Gluteus maximus
B) Popliteus
C) Biceps femoris
D) Gastrocnemius
E) Iliopsoas

Question

Quizplus · Accepted Answer

The symptoms described are consistent with a hamstring injury, which often occurs in the biceps femoris muscle. The extensive bruising and difficulty in rising from a seated position and flexing the knee are also common with this type of injury. The other muscles listed do not typically cause these symptoms.

An Olympic Sprinter Readies for a Race