Popliteal Fossa & Knee Flashcards

1
Q

Quadriceps Femoris Muscles

A

Rectus Femoris
Vastus Lateralis
Vastus Medialis
Vastus Intermedius

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2
Q

Rectus Femoris Origin

A

Anterior inferior iliac spine and ilium superior to acetabulum

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3
Q

Vastus Lateralis Origin

A

Greater trochanter and lateral lip of linea aspera of femur

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4
Q

Vastus medialis origin

A

Intertrochanteric line and medial lip of linea aspera of femur

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5
Q

Vastus Intermedius Origin

A

Anterior and lateral surfaces of shaft of femur

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6
Q

Quadriceps Femoris Insertion

A

Common tendinous ( quardriceps tendon )and independent attachments to patella; indirectly to tibial tuberosity via patellar ligament. (Medial and lateral vasti also attach to the tibia and patella via aponeuroses- medial and lateral retiniacula)

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7
Q

Quadriceps Femoris Action

A

Extend leg at knee joint; rectus femoris also steadies hip joint and help flex thigh

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8
Q

Quadriceps Femoris Innervation

A

Femoral Nerve (L2,L3,L4)

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9
Q

Semimembranosus Origin

A

Ischial Tuberosity

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10
Q

Semimembranosus Insertion

A

Posterior part of medial condyle of tibia

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11
Q

Semimembranosus Action

A

Extend thigh; flex leg and rotate it medial when knee is flexed; extends trunk when thigh and leg are flexed

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12
Q

Semimembranosus Innervation

A

Tibial division of sciatic nerve part of tibia (L5, S1, S2)

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13
Q

Semitendinosus Origin

A

Ischial Tuberosity

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14
Q

Semitendinosus Insertion

A

Medial surface of superior part of tibia

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15
Q

Semitendinosus Action

A

Extend thigh; flex leg and rotate it medial when knee is flexed; extends trunk when thigh and leg are flexed

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16
Q

Semitendinosus Innervation

A

Tibial division of sciatic part of tibia (L5, S1, S2)

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17
Q

Gracilis Origin

A

Body and inferior ramus of pubis

18
Q

Gracilis Insertion

A

Superior part of medial surface of tibia

19
Q

Gracilis Action

A

Adducts thigh; flexes leg; helps rotate leg medially

20
Q

Gracilis Innervation

A

Obturator Nerve (L2,L3)

21
Q

Sartorius Origin

A

Anterior superior iliac spine and superior part of notch inferior to it

22
Q

Sartorius Insertion

A

Superior part of medial surface of tibia

23
Q

Sartorius Action

A

Flexes, abducts, and laterally rotates thigh at hip joint; flexes leg at knee joint, medially rotates leg when knee is flexed

24
Q

Sartorius Innervation

A

Femoral nerve (L2,L3)

25
Q

Biceps femoris Long Head Origin

A

Ischial Tuberosity

26
Q

Biceps Femoris Short head Origin

A

Linea aspera and lateral supracondylar line of femur

27
Q

Biceps Femoris Insertion

A

Lateral side of head of fibula

28
Q

Biceps Femoris Action

A

Flexes leg and rotates it laterally when knee is flexed; extends thigh

29
Q

Biceps Femoris Long Head Innervation

A

Tibial division of sciatic nerve (L5,S1,S2)

30
Q

Biceps Femoris Short Head Innervation

A

Common fibular division of sciatic nerve (L5,S1,S2)

31
Q

Hamstring Part of Adductor Magnus Origin

A

Ischial Tuberosity

32
Q

Hamstring Part of Adductor Magnus Insertion

A

Adductor Tubercle of femur

33
Q

Hamstring Part of Adductor Magnus Action

A

Adducts and Extends thigh

34
Q

Hamstring Part of Adductor Magnus Innervation

A

Tibial part of sciatic nerve (L4)

35
Q

Popliteus Origin

A

Lateral surface of lateral condyle of femur and lateral meniscus

36
Q

Popliteus Insertion

A

Posterior surface of tibia superior to soleal line

37
Q

Popliteus Action

A

Weakly flexes knee and unlocks it by rotating femur on flexed tibia; medially rotates tibia of unplanted limb

38
Q

Popliteus Innervation

A

Tibial nerve (L4,L5,S1)

39
Q

Plantaris Origin

A

Inferior end of lateral supracondylar line of femur; oblique popliteal ligament

40
Q

Plantaris Insertion

A

Posterior surface of calcaneus via calcaneal tendon (achilles)

41
Q

Plantaris Action

A

Weakly assists gastrocnemius in plantarflexing ankle

42
Q

Plantaris Innervation

A

Tibial nerve (S1,S2)