muscles of the thigh Flashcards


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created 3 weeks ago by brookewil
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1
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sartorius

O: ASIS

I: upper part of medial surface of shaft of tibia

A: Flexes, abducts, external rotation of femur; slight internal rotation of leg at the knee joint
after flexion

N: femoral nerve

2
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rectus femoris

O: AIIS

I: tibial tuberosity via patellar tendon

A: flexes thigh, extends leg

N: femoral nerve

3
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vastus lateralis

O: intertrochanteric line

I: tibial tuberosity via patellar tendon

A: extends leg

N: femoral nerve

4
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vastus medialis

O: intertrochanteric line

I: tibial tuberosity via patellar tendon

A: extends leg

N: femoral nerve

5
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vastus intermedius

O: anterior and lateral 2/3 of femur

I: tibial tuberosity via patellar tendon

A: extends leg

N: femoral nerve

6
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gracilis

O: pubic ramus

I: upper, medial shaft of tibia

A: adducts thigh

N: obturator nerve

7
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pectineus

O: superior ramus of pubis

I: lesser trochanter

A: flexes thigh, assists in adduction when hip flexed

N: femoral nerve

8
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adductor longus

O: anterior pubis

I: linea aspera

A: adducts thigh, assists with medial rotation

N: obturator nerve

9
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adductor brevis

O: inferior ramus of pubis

I: linea aspera

A: adducts thigh

N: obturator nerve

10
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adductor magnus

O: inferior ramus of pubis

I: linea aspera, adductor tubercle of femur

A: adducts and extends thigh

N: obturator nerve

11
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biceps femoris

O: long head- ischial tuberosity

short head- linea aspera

I: head of fibula

A: flexes knee and

long head- extends thigh

N: long head- tibial nerve

short head- common peroneal nerve

12
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semitendinosus

O: ischial tuberosity

I: medial, superior tibia

A: flexes knee, extends thigh

N: tibial nerve

13
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semimembranosus

O: ischial tuberosity

I: posterior, superior tibia

A: flexes knee, extends thigh

N: tibial nerve