Rectus femoris muscle

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Rectus Femoris Muscle

The Rectus Femoris Muscle (pronounced: REK-tus FEM-or-is) is one of the four quadriceps muscles of the human body. The others are the vastus lateralis, vastus medialis, and vastus intermedius.

Etymology

The term "Rectus Femoris" is derived from Latin, where "Rectus" means straight, and "Femoris" refers to the femur or thigh. Thus, it is the straight muscle of the femur.

Anatomy

The Rectus Femoris originates from the anterior inferior iliac spine and the deep surface of the hip capsule. It extends down the upper leg and inserts into the patellar tendon as one of the central muscles in the quadriceps group.

Function

The Rectus Femoris is responsible for knee extension and hip flexion. This makes it a crucial muscle for movements such as walking, running, and jumping.

Related Terms

  • Quadriceps Femoris: The muscle group consisting of the Rectus Femoris, Vastus Lateralis, Vastus Medialis, and Vastus Intermedius.
  • Hip Flexors: A group of muscles, including the Rectus Femoris, that act to flex the hip joint.
  • Knee Extensors: Muscles that act to straighten the knee. The Rectus Femoris is one of these muscles.

See Also

External links

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