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MD2002 > Muscles of the Lower Limb: Functions > Flashcards

Muscles of the Lower Limb: Functions Flashcards

1
Q

What is the function of psoas major?

A

hip flexion

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2
Q

What is the general rule for the movements/functions of hip muscles?

A

AF PE LA

Anterior = Flexion of hip

Posterior = Extension of hip

Lateral = Abduction of hip

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3
Q

What are the borders of the gluteal region?

A

Anterior: Pelvic Girdle

Superior: Iliac Crest

Inferior: Gluteal Folds

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4
Q

Function of the Gluteus Maximus

A

Hip extension
External rotation (assists)
Abduction (superior fibres)
Adduction (inferior fibres)

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5
Q

Function of gluteus medius and minimus

A

Abductors of the hip

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6
Q

Function of tensor fasciae latae

A

Flexion
Medial Rotation
Abduction
Stabilisation of the knee

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7
Q

Function of piriformis

A

External rotation and abduction of the hip

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8
Q

What is the function of gemellus superior?

A

external rotation and abduction of the hip

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9
Q

What is the function of obturator internus?

A

External rotation and slight abduction of the hip

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10
Q

What is the function of gemellus inferior?

A

external rotation and abduction of the hip

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11
Q

What is the function of quadratus femoris?

A

external rotation of the hip

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12
Q

What are the main actions of the hamstrings?

A

Hip extension
knee flexion
medial/lateral rotation of the hip and knee

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13
Q

What is the function of iliopsoas?

A

Hip flexion

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14
Q

What is the function of iliacus?

A

Hip flexion

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15
Q

What is the function of rectus femoris?

A

Hip flexion

Knee extension

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16
Q

What is the function of vastus medialis?

A

Knee extension

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17
Q

What is the function of vastus intermedius?

A

Knee extension

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18
Q

What is the function of vastus lateralis?

A

knee extension

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19
Q

What is the function of sartorius?

A

Hip Flexion
Knee Flexion
Thigh Abduction
Thigh lateral rotation

20
Q

What is the origin of iliopsoas?

A

Posterior abdominal wall

21
Q

What is the origin of rectus femoris?

A

Ilium superior to acetabulum

22
Q

What is the origin of the vastus medialis?

A

Intertrochanteric line down to medial supracondylar line

23
Q

What is the origin of vastus intermedius?

A

Upper two thirds of the anterolateral surface of the femur

24
Q

What is the origin of the vastus lateralis?

A

superior intertrochanteric line to gluteal spine

25
Q

What is the origin of the sartorius?

A

anterior superior iliac spine

26
Q

What is the insertion of the iliopsoas?

A

Lesser trochanter of the femur

27
Q

What is the insertion of the rectus femoris?

A

Quadriceps femoris tendon

28
Q

What is the insertion of the vastus muscles?

A

Quadriceps femoris tendon

29
Q

What is the insertion of the sartorius muscle?

A

medial surface of tibia, below tibial tuberosity

30
Q

What is the function of extensor digitorum brevis?

A

extends the toes (duh)

31
Q

What is the function of extensor hallucis brevis?

A

works to extend the big toe

32
Q

What is the function of quadratus plantae?

A

flexes toes 2-5

33
Q

From where do the extrinsic muscles of the foot originate?

34
Q

What is the function of gastrocnemius?

A

plantarflexes the foot

flexes the knee

35
Q

What is the function of the soleus muscle?

A

Plantarflexes the foot

36
Q

What is the function of the plantaris muscle?

A

Plantarflexes the foot and flexes the knee

37
Q

What is the function of the popliteus muscle?

A

Unlocks the knee joint
Laterally rotates the femur
Stabilises the knee joint

38
Q

What is the function of the tibialis posterior?

A

inversion and plantarflexion of the foot

supports the medial arch during walking

39
Q

what is the function of flexor digitorum longus?

A

flexes lateral 4 toes

40
Q

What is the function of fibularis longus?

A

Eversion and plantarflexion of the foot

Support for lateral and transverse arches of the foot

41
Q

What is the function of fibularis brevis?

A

Eversion of the foot

42
Q

What is the function of tibialis anterior?

A

dorsiflexion and inversion of the foot as well as supporting the medial arch of the foot

43
Q

What is the function of extensor hallucis longus?

A

Extension of the great toe and dorsiflexion of the foot

44
Q

What is the function of the extensor digitorum longus?

A

Extension of the lateral 4 toes and dorsiflexion of the foot

45
Q

What is the function of fibularis tertius?

A

Dorsiflexion and eversion of the foot

46
Q

What is the function of muscles in the posterior compartment of the lower leg?

A

Plantarflexion and inversion of the foot, flexion of the toes

ALL INNERVATED BY TIBIAL NERVE

MD2002 (50 decks)

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