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Questions and Answers

What is the primary action of the Popliteus muscle?

  • Weakly extends the knee
  • Laterally rotates the femur on a fixed tibia (correct)
  • Flexes the hip joint
  • Unlocks an extended knee (correct)
  • Which layer of muscles in the foot contains the flexor of the big toe?

  • 3rd layer (correct)
  • 1st layer
  • 2nd layer
  • 4th layer
  • Which nerve innervates the Popliteus muscle?

  • Sciatic nerve
  • Tibial nerve (correct)
  • Femoral nerve
  • Peroneal nerve
  • What type of muscle is found deep in relation to the Popliteus?

    <p>Deep thin triangular muscle</p> Signup and view all the answers

    What type of joint is formed between the distal ends of the tibia and fibula and the talus?

    <p>Synovial, hinge joint</p> Signup and view all the answers

    Which movement occurs primarily in the sagittal plane at the knee joint?

    <p>Flexion/Extension</p> Signup and view all the answers

    What prevents the tibia and fibula from spreading apart during dorsiflexion?

    <p>Strong ligaments</p> Signup and view all the answers

    Which surface of the femur is matched with the asymmetrical shape of the patella?

    <p>Medial and lateral patellar surfaces</p> Signup and view all the answers

    What is the primary role of the patella in the knee?

    <p>Improve leverage of the quadriceps</p> Signup and view all the answers

    What is the configuration of the tibiofibular joint at the distal end?

    <p>Syndesmosis joint</p> Signup and view all the answers

    How many axes of movement does the knee joint have?

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

    The position of the patella changes when the knee is flexed. What is its position in full extension?

    <p>Superimposed over the femur</p> Signup and view all the answers

    Which nerve innervates the superficial muscles of the posterior compartment of the leg?

    <p>Tibial Nerve</p> Signup and view all the answers

    Which of the following muscles is the most superficial in the lateral compartment of the leg?

    <p>Fibularis longus</p> Signup and view all the answers

    What is the primary function of the Fibularis longus and Fibularis brevis muscles?

    <p>Eversion of the foot</p> Signup and view all the answers

    The Fibularis brevis muscle originates from which part of the fibula?

    <p>Inferior two-thirds of the lateral surface</p> Signup and view all the answers

    Which muscle group is classified as plantar flexors in the posterior compartment of the leg?

    <p>Soleus and Gastrocnemius</p> Signup and view all the answers

    Where does the Fibularis longus muscle insert?

    <p>Base of the 1st metatarsal</p> Signup and view all the answers

    Which statement about the Gastrocnemius muscle is true?

    <p>It is a significant plantar flexor of the foot.</p> Signup and view all the answers

    What is the main branch of the sciatic nerve?

    <p>Common fibular nerve</p> Signup and view all the answers

    Which muscle is classified as a deep muscle in the posterior compartment?

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

    Which nerve is responsible for supplying the hamstrings?

    <p>Tibial nerve</p> Signup and view all the answers

    Which of the following statements is correct regarding the sciatic nerve?

    <p>It divides above the knee into tibial and common fibular nerves.</p> Signup and view all the answers

    The tibial nerve's function includes which of the following?

    <p>Continues into the plantar region of the foot</p> Signup and view all the answers

    Which nerves are components of the sciatic nerve?

    <p>L4, L5, S1, S2, and S3</p> Signup and view all the answers

    What is the role of the pudendal nerve?

    <p>Supplies the pelvis and perineum</p> Signup and view all the answers

    What does the common fibular nerve mainly innervate?

    <p>Muscles of the lower leg and foot</p> Signup and view all the answers

    What is the anatomical relationship of the sciatic nerve in the thigh?

    <p>It lies under the hamstrings</p> Signup and view all the answers

    Which ligament is primarily responsible for resisting eversion at the ankle?

    <p>Deltoid ligament</p> Signup and view all the answers

    What structures contribute to knee stability?

    <p>Muscles, ligaments, and menisci</p> Signup and view all the answers

    What is the role of the anterior cruciate ligament (ACL) in the knee?

    <p>Preventing posterior translation of the femur</p> Signup and view all the answers

    What happens to the cruciate ligaments when the femur rotates laterally on a fixed tibia?

    <p>They 'wind up'</p> Signup and view all the answers

    Which ligament is categorized as a collateral ligament of the knee?

    <p>Fibular collateral ligament</p> Signup and view all the answers

    What function does the medial collateral ligament (MCL) serve?

    <p>Resists lateral forces on the knee</p> Signup and view all the answers

    Which of the following is a characteristic of the anterior cruciate ligament?

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

    Which structure is not primarily involved in knee stability?

    <p>Skin surrounding the knee</p> Signup and view all the answers

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