Lower Limbs Anatomy MCQs
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Tensor fasciae latae

A muscle located on the lateral side of the hip, which is supplied by the superior gluteal nerve.

Intrasynovial structure in knee

The anterior cruciate ligament (ACL) is INTRA-synovial meaning it is contained within the synovial membrane of the knee joint.

Screw-home mechanism

This refers to the rotation that occurs in the last few degrees of knee extension, primarily due to the actions of the ligaments.

Great saphenous vein

The longest vein in the body, starting from the dorsal venous arch and emptying into the femoral vein.

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Femoral nerve functions

It provides motor innervation to the anterior compartment of the thigh and sensory innervation to the anterior thigh and parts of the leg.

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Popliteal fossa contents

Contains the popliteal artery, popliteal vein, tibial nerve, common peroneal nerve, and lymph nodes.

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Adductor canal

A narrow space in the thigh that transmits the femoral artery and vein, and saphenous nerve.

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Hamstring muscles

A group of three muscles (semimembranosus, semitendinosus, and biceps femoris) located at the back of the thigh, primarily responsible for knee flexion.

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Femoral artery path

The main arterial supply to the lower limb; it enters the thigh beneath the inguinal ligament.

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Gluteus maximus role

The major extensor muscle of the hip, important for movements such as standing up and climbing stairs.

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Injury to sciatic nerve

Can lead to weakness in the hamstrings and motor function loss in the lower limb.

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Iliotibial tract (IT band)

A fibrous band running along the outer thigh that stabilizes the knee.

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Posterior tibial artery

Supplies blood to the posterior compartment of the leg and foot.

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Patella stability

Maintained by tensions in the patellar retinaculum and muscle actions of the quadriceps.

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Ankle joint movement

Primarily allows dorsiflexion and plantarflexion, crucial for walking.

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Tendon of popliteus

This muscle helps to unlock the knee from the extended position.

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Common peroneal nerve damage

Injury may lead to foot drop, affecting dorsiflexion.

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Lateral rotation of hip

Achieved by muscles like gluteus maximus, piriformis, and quadratus femoris.

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Surface markings of femoral nerve

Located halfway between the ASIS and pubic tubercle.

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Medial meniscus

A C-shaped cartilage that is firmly attached to the knee joint capsule, providing stability.

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Obturator nerve functions

Provides sensory and motor innervation to parts of the thigh, especially adductor muscles.

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Quadriceps femoris

A group of four muscles crucial for knee extension.

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Lymphatic drainage of the lower limb

Mainly channels through superficial and deep inguinal nodes and nodes along major veins.

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Flexor hallucis longus function

Mainly flexes the big toe; aids in plantarflexion of the ankle.

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Superficial peroneal nerve function

Supplies sensation to the dorsum of the foot and part of the lower leg.

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Tibial nerve

Responsible for plantarflexion and toe flexion in the foot.

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Femoral triangle boundaries

Bounded by the inguinal ligament, sartorius laterally, and adductor longus medially.

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Study Notes

Section 1 Lower Limbs MCQs

  • Tensor fasciae latae supply: Anterior division of femoral nerve
  • Intrasynovial structure at knee joint: Medial and lateral menisci
  • Screw-home movement start: Tightening of the lateral collateral ligament in knee extension
  • Tibialis anterior supply and insertion: Supplied by the common peroneal nerve, inserting into the second metatarsal bone.
  • Adductor canal contents: Contains the femoral artery and nerve, ending in the adductor longus hiatus.
  • Great saphenous vein joining point: Joins the femoral vein above the inguinal ligament.

Section 2 Lower Limbs MCQs

  • Femoral artery characteristics: Adductor magnus lies between it and the profunda femoris artery, profunda femoris vein lies behind the profunda femoris artery.
  • Gluteus maximus blood supply: The chief control of hip flexion and has 50% of fibres inserting into the gluteal tuberosity
  • Adductor compartment details: Adductor magnus lies between the anterior and posterior divisions of the obturator nerve
  • Trochanteric anastomosis vessels excluded: Obturator artery is not involved in the trochanteric anastomosis
  • Sciatic nerve placement: Lies deep to the posterior femoral cutaneous nerve
  • Hamstring compartment details: Ischial fibres of adductor magnus degenerate to form the tibial collateral ligament

Section 3 Lower Limbs

  • Cutaneous nerve supply of the thigh: Excludes the obturator nerve
  • Patellar plexus components: Excludes the medial femoral cutaneous nerve
  • Inferior gluteal nerve supply: Supplies gluteus maximus, gluteus medius, and gluteus minimus.
  • Muscles within the buttock: The pudendal nerve emerges beneath piriformis, turns around the back of the sacrospinous ligament and passes between the sacrotuberous and sacrospinous ligaments.
  • Ligaments and knee joint: Details about fibular collateral ligament blending with capsule and its connection to lateral meniscus, tibial collateral ligament attaching to the medial meniscus.
  • Nerve supply of the lower limb: Details of the superficial peroneal nerve supplying muscles in the anterior compartment, cruciate ligaments being supplied by the tibial nerve, sciatic nerve not making contact with bone, and the tibial part of the sciatic nerve being the sole supply to muscles in the hamstring compartment.

Section 4 Lower Limbs

  • Slipped upper femoral epiphysis: More common in boys, usually in the 5–8 year age group.
  • Dermatomes of lower limb: Details of which dermatomes supply the great toe, anterior upper thigh, perianal area, medial thigh and medial calf.
  • Muscles in the floor of the femoral triangle: Includes adductor magnus, pectineus, psoas and iliacus, not adductor longus.
  • Patellar plexus components: Posterior branch of lateral femoral cutaneous nerve, infrapatella branch of saphenous nerve, medial femoral cutaneous nerve, anterior branch of lateral femoral cutaneous nerve, and intermediate femoral cutaneous nerve.
  • Vascular supply to femoral head: Intertrochanteric anastomosis vessels in the retinacula provide primary blood supply, and branches from the profunda femoris artery are the blood source for the head of the femur.
  • Trendelenburg's test: A test for assessing the strength of the abductors of the hip. A positive test means that the adductors of the hip are weak. Details on whether a test is negative indicate the strength of the gluteus medius and minimus and the tensor fasciae lateralis muscles

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Lower Limb MCQs PDF

Description

Test your knowledge on the anatomy of the lower limbs with these multiple-choice questions. The quiz covers various aspects, including nerve supplies, muscle insertions, and joint structures specific to the lower leg. Perfect for students in anatomy or medical studies.

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