Muscles of the gluteal and thigh region

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outer surface of ilium, sacrum, coccyx, sacrotuberous ligament

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outer surface of ilium, sacrum, coccyx, sacrotuberous ligament

gluteus maximus origin

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iliotibial tract and gluteal tuberosity of femur

gluteus maximus insertion

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inferior gluteal nerve

gluteus maximus nerve supply

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extends and laterally rotates hip joint; through iliotibial tract, it extends knee joint

gluteus maximus action

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outer surface of ilium

gluteus medius origin

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lateral surface of greater trochanter of femur

gluteus medius insertion

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superior gluteal nerve

gluteus medius nerve supply

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abducts thigh at hip joint; tilts pelvis when walking to permit opposite leg to clear ground

gluteus medius action

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outer surface of ilium

gluteus minimus origin

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anterior surface of greater trochanter of femur

gluteus minimus insertion

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superior gluteal nerve

gluteus minimus nerve supply

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abducts thigh at hip joint; tilts pelvis when walking to permit opposite leg to clear ground

gluteus minimus action

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iliac crest

tensor fasciae latae origin

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iliotibial tract

tensor fasciae latae insertion

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superior gluteal nerve

tensor fasciae latae nerve supply

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assists gluteus maximus in extending the knee joint

tensor fasciae latae action

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anterior surface of sacrum

piriformis origin

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Upper border of greater trochanter of femur

piriformis insertion

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First and second sacral nerves

piriformis nerve supply

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Lateral rotator of thigh at hip joint

piriformis action

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Inner surface of obturator membrane

obturator internus origin

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Upper border of greater trochanter of femur

obturator internus insertion

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sacral plexus

obturator internus nerve supply

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Lateral rotator of thigh at hip joint

obturator internus action

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spine of ischium

gemellus superior origin

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Upper border of greater trochanter of femur

gemellus superior insertion

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sacral plexus

gemellus superior nerve supply

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Lateral rotator of thigh at hip joint

gemellus superior action

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ischial tuberosity

gemellus inferior origin

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Upper border of greater trochanter of femur

gemellus inferior insertion

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sacral plexus

gemellus inferior nerve supply

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Lateral rotator of thigh at hip joint

gemellus inferior action

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Lateral border of ischial tuberosity

quadratus femoris origin

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Quadrate tubercle of femur

quadratus femoris insertion

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sacral plexus

quadratus femoris nerve supply

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Lateral rotator of thigh at hip joint

quadratus femoris action

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Anterior superior iliac spine

sartorius origin

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Upper medial surface of shaft of tibia

sartorius insertion

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Femoral nerve

sartorius nerve supply

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Flexes, abducts, laterally rotates thigh at hip joint; flexes and medially rotates leg at knee joint

sartorius action

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Iliac fossa of hip bone

iliacus origin

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With psoas into lesser trochanter of femur

iliacus insertion

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Femoral nerve

iliacus nerve supply

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Flexes thigh on trunk; if thigh is fixed, it flexes the trunk on the thigh as in sitting up from lying down

iliacus action

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Transverse processes, bodies, and intervertebral discs of the 12th thoracic and five lumbar vertebrae

psoas origin

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With iliacus into lesser trochanter of femur

psoas insertion

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Lumbar plexus

psoas nerve supply

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Flexes thigh on trunk; if thigh is fixed, it flexes the trunk on thigh as in sitting up from lying down

psoas action

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Superior ramus of pubis

pectineus origin

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Upper end of linea aspera of shaft of femur

pectineus insertion

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Femoral nerve

pectineus nerve supply

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Flexes and adducts thigh at hip joint

pectineus action

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Straight head: anterior inferior iliac spine Reflected head: ilium above acetabulum

rectus femoris origin

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Quadriceps tendon into patella, then via ligamentum patellae into tubercle of tibia

rectus femoris insertion

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Femoral nerve

rectus femoris nerve supply

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Extension of leg at knee joint; flexes thigh at hip joint

rectus femoris action

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Upper end and shaft of femur

vastus lateralis origin

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Quadriceps tendon into patella, then via ligamentum patellae into tubercle of tibia

vastus lateralis insertion

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Femoral nerve

vastus lateralis nerve supply

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Extension of leg at knee joint

vastus lateralis action

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Upper end and shaft of femur

vastus medialis origin

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Quadriceps tendon into patella, then via ligamentum patellae into tubercle of tibia

vastus medialis insertion

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Femoral nerve

vastus medialis nerve supply

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Extension of leg at knee joint; stabilizes patella

vastus medialis action

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Anterior and lateral surfaces of shaft of femur

vastus intermedius origin

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Quadriceps tendon into patella, then via ligamentum patellae into tubercle of tibia

vastus intermedius insertion

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Femoral nerve

vastus intermedius nerve supply

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Extension of leg at knee joint; articularis genus retracts synovial membrane

vastus intermedius action

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Inferior ramus of pubis, ramus of ischium

gracilis origin

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Upper part of shaft of tibia on medial surface

gracilis insertion

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Obturator nerve

gracilis nerve supply

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Adducts thigh at hip joint; flexes leg at knee joint

gracilis action

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Body of pubis, medial to pubic tubercle

adductor longus origin

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Posterior surface of shaft of femur (linea aspera)

adductor longus insertion

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Obturator nerve

adductor longus nerve supply

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Adducts thigh at hip joint and assists in lateral rotation

adductor longus action

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Inferior ramus of pubis

adductor brevis origin

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Posterior surface of shaft of femur (linea aspera)

adductor brevis insertion

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Obturator nerve

adductor brevis nerve supply

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Adducts thigh at hip joint and assists in lateral rotation

adductor brevis action

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Inferior ramus of pubis, ramus of ischium, ischial tuberosity

adductor magnus origin

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Posterior surface of shaft of femur, adductor tubercle of femur

adductor magnus insertion

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Adductor portion: obturator nerve Hamstring portion: sciatic nerve

adductor magnus nerve supply

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Adducts thigh at hip joint and assists in lateral rotation; hamstring portion extends thigh at hip joint

adductor magnus action

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