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PT Anatomy Unit 2 > Thigh Muscles > Flashcards

Thigh Muscles Flashcards

1
Q

Piriformis

A

O: Anterior surface of sacrum
I: Medial side of superior border of greater trochanter.

Branches from L5, S1, S2

Externally rotates the extended femur at the hip joint, abducts the flexed femur at the hip joint.

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2
Q

Obturator Internus

A

O: Obturator Membrane.
I: Medial side of greater trochanter

Nerve to obturator internus

Externally rotates the extended femur at the hip joint, abducts the flexed femur at the hip joint.

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3
Q

Gemellus superior

A

O: External surface of ischial spine.
I: Medial side of greater trochanter.

Nerve to obturator internus.

Externally rotates the extended femur at the hip joint, abducts the flexed femur at the hip joint.

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4
Q

Quadratus Femoris

A

O: Ischial tuberosity
I: Quadrate tubercle

Nerve to quadratus femoris

Externally rotates the femur at the hip joint.

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5
Q

Gluteus Minimus

A

O: Ilium between inferior and anterior gluteal lines
I: Greater trachanter.

Superior gluteal nerve

Abducts the femur at the hip joint, holds pelvis secure over stance leg and prevents pelvic drop on opposite swing side during walking, internally rotates thigh.

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6
Q

Gluteus Medius

A

O: Ilium between anterior and posterior gluteal lines
I: Greater Trochanter.

Superior gluteal nerve.

Abducts the femur at the hip joint, hold pelvis secure over stance leg and prevents pelvic drop on opposite swing side during walking, internally rotates thigh.

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7
Q

Gluteus Maximus

A

O: Ilium behind posterior gluteal line
I: Iliotibial tract, gluteal tuberosity

Inferior gluteal nerve.

Extensor of a flexed femur at hip, lateral stabilizer of hip joint and knee joint, eternal rotates and abducts thigh.

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8
Q

Tensor Fascia Lata

A

O: Ilium between ASIS and tubercle of the crest
I: Iliotibial tract

Superior gluteal Nerve

Stabilizes the knee in extension

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9
Q

Psoas Major

A

O: Lumbar transverse processes from T12-L5
I: Lesser trochanter of femur.

Anterior Rami L1, L2, L3 (Nerve to psoas major)

Flexes the thigh at the hip joint.

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10
Q

Iliacus

A

O: Posterior abdominal wall
I: Lesser trochanter of femur

Femoral Nerve

Flexes the thigh at the hip joint.

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11
Q

Vastus Medialis

A

O: Medial lip of the linea aspera, Medial supra condylar line.
I: Quadriceps tendon

Femoral Nerve.

Extends the leg at the knee joint.

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12
Q

Vastus Intermedius

A

O: Upper 2/3 of anterior and lateral surfaces of the femur.
I: Quadriceps Tendon

Femoral Nerve

Extends the leg at the knee joint.

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13
Q

Vastus Lateralis

A

O: Intertrochanteric Line, Laterla lip of the linea aspera
I: Quadriceps tendon

Femoral Nerve

Extends the leg at the knee joint.

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14
Q

Rectus Femoris

A

O: Straight Head: AIIS, Reflected Head: Ilium just superior to the acetabulum
I: Quadriceps Tendon

Femoral Nerve.

Flexes the thigh at the hip joint, extends the leg at the knee joint.

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15
Q

Sartorius

A

O: ASIS
I: Medial surface of the tibia.

Femoral Nerve.

Flexes the thigh at the hip joint, flexes the leg at the knee joint, externally rotates thigh.

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16
Q

Gracilis

A

O: External surface of the body of the pubis, inferior pubic ramus and ramus of the ischium.
I: Medial surface of the proximal shaft of the tibia

Obturator nerve

Adducts thigh at hip joint and flexes leg at knee joint.

17
Q

Pectineus

A

O: Pectineal line and adjacent bone of pelvis
I: Linea aspera on posterior surface of proximal femur

Femoral nerve

Adducts and flexes the thigh at hip joint.

18
Q

Adductor Longus

A

O: External surface of the body of the pubis.
I: Linea aspera on the middle 1/3 shaft of the femur.

Obturator nerve

Adducts and Internally rotates thigh at hip joint.

19
Q

Adductor Brevis

A

O: External surface of the body of the pubis, inferior pubic ramus.
I: Posterior surface of proximal 1/3 of linea aspera

Obturator Nerve

Adducts thigh at hip joint.

20
Q

Adductor Magnus

A

O: Adductor Part: Ischiopubic ramus; Hamstring Part: Ischial tuberosity
I: Adductor Part: Linea aspera, medial supracondylar line; Hamstring Part: Adductor tubercle and supracondylar line.

Adductor part: Obturator nerve.
Hamstring part: Sciatic nerve.

Adducts and internally rotates thigh at hip joint.

21
Q

Obterator Externus

A

O: External surface of obturator membrane and adjacent bone
I: Trochanteric fossa

Obturator nerve

Externally rotates the thigh at the hip joint.

22
Q

Biceps Femoris

A

O: Long Head: Ischial tuberosity; Short Head: Lateral lip of linea aspera
I: Head of fibula; Lateral condyle of tibia.

Sciatic Nerve.

Flexes leg at knee joint, extends and externally rotates thigh at hip joint, externally rotates leg at knee joint.

23
Q

Semitendonosis

A

O: Ischial tuberosity
I: Medial surface of proximal tibia

Sciatic nerve

Flexes leg at knee joint and extends thigh at hip joint, internally rotates thigh at hip joint and leg at knee joint.

24
Q

Semimembranosus

A

O: Ischial tuberosity
I: Posterior surface of medial tibial condyle

Sciatic Nerve

Flexes leg at knee joint, extends and internally rotates thigh at hip joint, Internally rotates leg at knee joint.

PT Anatomy Unit 2 (4 decks)

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