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Anatomy: Knee > Muscles acting on knee > Flashcards

Muscles acting on knee Flashcards

1
Q

sartorius origin

A

ASIS

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2
Q

sartorius insertion

A

pes anserine:

proximal medial surface of tibia

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3
Q

sartorius action

A 
hip flexion,
hip abduction,
hip ER, 
knee flexion,
knee IR
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4
Q

sartorius innervation

A

femoral nerve

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5
Q

rectus femoris origin

A

AIIS

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6
Q

rectus femoris insertion

A

patella via quad tendon;

tibial tuberosity via patellar tendon

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7
Q

rectus femoris action

A

knee extension,

hip flexion

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8
Q

rectus femoris innervation

A

femoral nerve

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9
Q

vastus intermedius origin

A

anterior and lateral surfaces of femur

intertrochanteric line

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10
Q

vastus intermedius insertion

A

patella via quad tendon;

tibial tuberosity via patellar tendon

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11
Q

vastus intermedius action

A

knee extension

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12
Q

vastus intermedius innervation

A

femoral nerve

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13
Q

vastus medialis origin

A

anterior and lateral surfaces of femur (intertrochanteric line)

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14
Q

vastus medialis insertion

A

patella via quad tendon;

tibial tuberosity via patellar tendon

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15
Q

vastus medialis action

A

knee extension

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16
Q

vastus medialis innervation

A

femoral nerve

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17
Q

vastus lateralis origin

A

greater trochanter,

intertrochanteric line

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18
Q

vastus lateralis insertion

A

patella via quad tendon;

tibial tuberosity via patellar tendon

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19
Q

vastus lateralis action

A

knee extension

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20
Q

vastus lateralis innervation

A

femoral nerve

21
Q

biceps femoris long head origin

A

ischial tuberosity

22
Q

biceps femoris long head insertion

A

fibular head

23
Q

biceps femoris long head action

A

hip extension,
knee flexion,
hip and ER of flexed knee;
posterior pelvic tilt

24
Q

biceps femoris long head innervation

A

tibial nerve (sciatic)

25
Q

biceps femoris short head origin

A

linea aspera

26
Q

biceps femoris short head insertion

A

fibular head

27
Q

biceps femoris short head action

A

knee flexion,

ER of flexed knee

28
Q

biceps femoris short head innervation

A

common fibular (sciatic)

29
Q

semimembranosus origin

A

ischial tuberosity

30
Q

semimembranosus insertion

A

posterior surface of medial tibial condyle

31
Q

semimembranosus action

A

knee flexion,
hip extension,
hip and iR of flexed knee,
posterior pelvic tilt

32
Q

semimembranosus innervation

A

tibial (sciatic)

33
Q

semitendinsosus origin

A

ischial tuberosity

34
Q

semitendinsosus insertion

A

pes anserine:

medial surface of the proximal tibia

35
Q

semitendinsosus action

A

knee flexion,
hip extension,
hip and knee IR,
posterior pelvic tilt

36
Q

semitendinsosus innervation

A

tibial (sciatic)

37
Q

popliteus origin

A

lateral condyle of femur

38
Q

popliteus insertion

A

proximal, posterior tibia

39
Q

popliteus action

A

weak knee flexor,

IR of tibia (unlocks knee)

40
Q

popliteus innervation

41
Q

gastrocnemius origin

A

medial and lateral femoral condyles

42
Q

gastrocnemius insertion

A

calcaneus via Calcaneal (Achilles) tendon

43
Q

gastrocnemius action

A

knee flexion,

ankle plantarflexion

44
Q

gastrocnemius innervation

45
Q

plantaris origin

A

lateral supracondylar line of femur

46
Q

plantaris insertion

A

calcaneus via Calcaneal (Achilles) tendon

47
Q

plantaris action

A

weak ankle plantarflexion,

weakly assists in knee flexion

48
Q

plantaris innervation

Anatomy: Knee (9 decks)

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