Posterior muscle O.I.A.N Flashcards by Joe Cavazos

Q

Gluteus Maximus origin

A

Posterior GLUTEAL line/ilium

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Q

Gluteus Maximus Insertion

A

GLUTEAL tuberosity/femur

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Q

Gluteus Maximus action

A

extends and laterally rotates the femur

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Q

Gluteus Maximus nerve supply

A

inferior gluteal (L5, S1, S2)

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Q

Gluteus Medius origin

A

External surface/ ilium

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Q

Gluteus Medius insertion

A

Greater trochanter/femur

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Q

Gluteus Medius action

A

abducts the femur

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Q

Gluteus Medius nerve supply

A

superior gluteal (L4,L5,S1)

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Q

Gluteus Minimus origin

A

external surface/ ilium

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Q

Gluteus Minimus insertion

A

greater trochanter/ femur

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Q

Gluteus Minimus action

A

abducts the femur

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Q

Gluteus Minimus N.

A

superior gluteal (L4,L5,S1)

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Q

Piriformis orgin

A

anterior surface/ sacrum

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Q

Piriformis insertion

A

greater trochanter/ femur

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Q

Piriformis action

A

laterally rotates the femur

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Q

Piriformis nerve supply

A

S1,S2

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Q

Superior Gemellus origin

A

spine/ischium

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Q

Superior Gemellus insertion

A

greater trochanter/ femur

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Q

Superior Gemellus action

A

laterally rotates the femur

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Q

Superior Gemellus innervation

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A

L4,L5,S1,S2

Q

Obturator Internus origin

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A

INTERNAL surface/ OBTURATOR membrane

Q

Obturator Internus insertion

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A

greater trochanter/femur

Q

Obturator Internus action

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A

laterally rotates the femur

Q

Obturator Internus innervation

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A

L4,L5,S1,S2

Inferior Gemellus origin

ischial tuberosity

Inferior Gemellus insertion

greater trochanter/ femur

Inferior Gemellus action

laterally rotates the femur

Inferior Gemellus innervation

L4,L5,S1,S2

Obturator Externus origin

EXTERNAL surface/ OBTURATOR membrane

Obturator Externus insertion

trochanteric fossa/ femur

Obturator Externus action

laterally rotates the femur

Obturator Externus innervaion

obturator (L2,L3,L4)

Quadratus Femoris origin

ischial tuberosity

Quadratus Femoris insertion

QUADRATE tubercule/ femur

Quadratus Femoris action

laterally rotates the femur

Quadratus Femoris innervation

L4,L5,S1,S2

semitendinosous origin

ischial tuberosity

semitendinosous insertion

medial condyle and proximal posterior shaft/tibia

semitendinosous action

Flexion of leg at knee joint

semitendinosous innervation

sciatic nerve (L4-S3)

semimembranosus origin

ischial tuberosity

semimembranosus insertion

medial condyle/ tibia

semimembranosus action

Flexion of leg at knee joint

semimembranosus innervation

sciatic nerve (L4-S3)

Biceps femoris (long and short head) origin

Ischial tuberosity (L.H.) (S.H.)=linea aspera of the femur

Biceps femoris (long and short head) insertion

Head/fibula

Biceps femoris (long and short head) action

Flexion of leg at knee joint

Biceps femoris (long and short head) innervation

sciatic nerve (L4-S3)