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Origins, insertions & actions > Knee > Flashcards

Knee Flashcards

1
Q

Origin of popliteus?

A

Popliteal groove, lateral condyle of femur

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2
Q

Insertion of popliteus?

A

Posterior surface of tibia, superior to soleal line

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3
Q

Action of popliteus?

A

“Unlocks” knee joint at beginning of knee flexion; medially rotates leg at knee joint

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4
Q

Insertion of rectus femoris?

A

Tibial tuberosity, via tendon of quadriceps femoris muscle

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5
Q

Origin of rectus femoris?

A

Anterior inferior iliac spine

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6
Q

Action of rectus femoris?

A

Extends knee; flexes hip

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7
Q

Origin of vastus medialis?

A

Medial part of the intertrochanteric line

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8
Q

Insertion of vastus medialis?

A

Tibial tuberosity via quadriceps tendon and medial border of patella

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9
Q

Action of vastus medialis?

A

Knee extension

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10
Q

Origin of vastus intermedius?

A

Anterior and lateral surfaces of body of femur

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11
Q

Insertion of vastus intermedius?

A

Tibial tuberosity, via tendon of quadriceps femoris

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12
Q

Action of vastus intermedius?

A

Knee extension

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13
Q

Origin of vastus lateralis?

A

Intertrochanteric line, greater trochanter

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14
Q

Insertion of vastus lateralis?

A

Tibial tuberosity, via quadriceps tendon; lateral border of patella

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15
Q

Action of vastus lateralis?

A

Knee extension

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16
Q

Origin of semitendinosus?

A

Ischial tuberosity

17
Q

Insertion of semitendinosus?

A

Medial aspect of tibia

18
Q

Action of semitendinosus?

A

Flexes and medially rotates leg at knee joint; extends hip

19
Q

Origin of biceps femoris?

A

Long head: ischial tuberosity; short head: inferior third of the linea aspera

20
Q

Insertion of biceps femoris?

A

Head of fibula

21
Q

Action of biceps femoris?

A

Flexes and laterally rotates leg at knee joint; extends hip

22
Q

Origin of semimembranosus?

A

Ischial tuberosity

23
Q

Insertion of semimembranosus?

A

Medial condyle of tibia

24
Q

Action of semimembranosus?

A

Flexes and medially rotates leg at knee joint; extends hip

Origins, insertions & actions (2 decks)

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