The origin of a muscle is on the femur,and the insertion is on the tibia.When it contracts,it bends the knee.Its fibers run parallel to the body.Which of the following terms might be part of its name?
A) Extensor
B) Abductor
C) Flexor
D) Adductor

Question

Quizplus · Accepted Answer

The muscle described here is responsible for flexing the knee, therefore "Flexor" is the best choice. "Extensor" and "Adductor" would refer to muscles that either straighten or move the leg toward the body midline respectively, and "Abductor" would refer to a muscle that moves the leg away from the body midline.

The Origin of a Muscle Is on the Femur,and the Insertion