Muscles of the Posterior Thigh
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Questions and Answers

Which of the following muscles is part of the hamstring group?

  • Vastus lateralis
  • Biceps femoris (correct)
  • Vastus medialis
  • Rectus femoris

    • What is the primary function of the biceps femoris?

  • Hip adduction
  • Knee flexion (correct)
  • Hip flexion
  • Knee extension

    • Which muscle is NOT considered a part of the hamstrings?

  • Iliopsoas (correct)
  • Semimembranosus
  • Semitendinosus
  • Biceps femoris

    • In addition to the biceps femoris, which muscle is included in the posterior thigh?

    <p>Semitendinosus</p> Signup and view all the answers

    Which muscles are primarily responsible for knee flexion?

    <p>Biceps femoris and semitendinosus</p> Signup and view all the answers

    What is the primary function of the quadriceps femoris group?

    <p>Extension of the knee</p> Signup and view all the answers

    Which of the following muscles is NOT a part of the hamstring group?

    <p>Rectus femoris</p> Signup and view all the answers

    Which action is primarily performed by the hamstring muscles?

    <p>Knee flexion</p> Signup and view all the answers

    How many muscles are generally classified as part of the quadriceps femoris group?

    <p>4</p> Signup and view all the answers

    What is the common origin of the quadriceps femoris group?

    <p>Anterior inferior iliac spine</p> Signup and view all the answers

    Which muscle is primarily responsible for extending the leg at the knee joint?

    <p>Rectus femoris</p> Signup and view all the answers

    What is the common action of the Quadriceps femoris group?

    <p>Extension of the leg at the knee joint</p> Signup and view all the answers

    Which of the following muscles is NOT part of the hamstring group?

    <p>Vastus lateralis</p> Signup and view all the answers

    What is the primary action of the Semimembranosus muscle?

    <p>Flexion of the leg at the knee joint</p> Signup and view all the answers

    Which muscle works as a prime mover for both flexion of the thigh at the hip joint and extension of the leg at the knee joint?

    <p>Rectus femoris</p> Signup and view all the answers

    What is the insertion point for the Quadriceps femoris?

    <p>Tibial tuberosity via patellar ligament</p> Signup and view all the answers

    Which of the following muscles is incorrectly paired with its action?

    <p>Semimembranosus - Extension of thigh</p> Signup and view all the answers

    What is the main function of the Iliopsoas muscle group?

    <p>Hip flexion</p> Signup and view all the answers

    Study Notes

    Muscles of the Posterior Thigh

    • Biceps femoris, Semitendinosus, Semimembranosus are the main muscles in this region.
    • Responsible for hip extension and knee flexion.

    Hip Flexor Muscles

    • Psoas Major:

      • Origin: T12-L5 vertebrae.
      • Insertion: Lesser trochanter of femur.
      • Prime mover for hip flexion; assists trunk flexion.

    • Iliacus:

      • Origin: Iliac fossa.
      • Insertion: Lesser trochanter of femur.
      • Also a prime mover for hip flexion.

    Muscles of the Anterior Thigh

    • Sartorius:

      • Origin: Anterior superior iliac spine.
      • Insertion: Medial and proximal aspect of tibia.
      • Actions: Flexion & lateral rotation of thigh; flexion of leg at knee joint.

    • Quadriceps Femoris Group:

      • Composed of Rectus Femoris, Vastus Lateralis, Vastus Medialis, Vastus Intermedius.
      • Common origin includes the anterior inferior iliac spine (Rectus femoris).
      • Insertion via Quadriceps femoris tendon to tibial tuberosity.
      • Primary action: Extension of leg at knee joint; Rectus femoris also allows flexion at the knee and hip joints.

    Muscles of the Medial Thigh

    • Individual muscle names are not necessary for study, focus on the group functions and relationships.

    Gluteal Muscles

    • Superficial Group: Includes Gluteus Maximus, Gluteus Medius, Gluteus Minimus.

      • Gluteus Maximus:

        • Origin: Gluteal surface of ilium, sacrum, and coccyx.
        • Insertion: Greater trochanter and gluteal tuberosity of femur; Iliotibial tract.
        • Prime mover for hip extension; contributes to abduction and lateral rotation.

      • Gluteus Medius and Minimus:

        • Major players in hip abduction and medial rotation.

    Muscles of the Lower Limb

    • Focus on relationships among different muscle groups including anterior, medial, and posterior compartments.
    • Understand function and origin/insertion relationships rather than memorizing individual muscles in the medial thigh.

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    Related Documents

    Introductory Anatomy ANAT1521-2111 Muscular System 2024 T2 PDF

    Description

    Test your knowledge on the muscles located in the posterior thigh, including the Biceps femoris and Semitendinosus. This quiz will cover their functions, anatomy, and characteristics. Perfect for students studying anatomy or related fields.

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