Muscles: Pelvis, Thigh Flashcards by Lindsey Morse

Name the muscle and its origin and insertion

Quadriceps: Rectus Femoris

Origin: Anterior Inferior Iliac Spine

Insertion: Tibial tuberosity via patellar tendon

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Name the muscle and its actions

Quadriceps: Rectus Femoris

Actions:

Extend knee (tibiofemoral joint)

Flex hip (coxal joint)

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Name the muscle and its origin and insertion

Quadriceps: Vastus Medialis

Origin: medial lip of linea aspera

Insertion: Tibial tuberosity via patellar tendon

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Name the muscle and its actions

Quadriceps: Vastus Medialis

Actions:

Extend knee (Tibiofemoral jt)

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Name the muscle and its origin and insertion

Quadriceps: Vastus Lateralis

Origin: Lateral lip of linea aspera, gluteal tuberosity, greater trochanter

Insertion: Tibial tuberosity via patellar tendon

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Name the muscle and its actions

Quadriceps: Vastus lateralis

Actions: Extend knee (tibiofemoral jt)

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Name the muscle and its origin and insertion

Quadriceps: Vastus Intermedius

Origin: Anterior and lateral shaft of the femur

Insertion: Tibial tuberosity via patellar tendon

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Name the muscle and its actions

Quadriceps: Vastus intermedius

Actions: Extend knee (tibiofemoral joint)

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Name the muscle and its origin and insertion

Hamstrings: Biceps Femoris

Top Green: Long head

Bottom Green: Short head

Origin

Long head: Ischial tuberosity

Short head: Lateral lip of linea aspera

Insertion: Head of the fibula

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Name the muscle and its actions

Hamstrings: Biceps femoris

Actions:

Flex the knee (Tibiofemoral jt)

Laterally rotate flexed knee (T/F jt)

Long head: Extend the hip (coxal jt)

Long head: Assist to laterally rotate the hip (coxal jt)

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Name the muscle and its origin and insertion

Hamstrings: Semitendinosus

Origin: Ischial tuberosity

Insertion: Proximal medial shaft of the tibia at pes anserinus tendon

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Name the muscle and its actions

Hamstrings: Semitendinosus

Actions:

Flex the knee (TF jt)

Medially rotate the flexed knee (TF jt)

Extend hip (coxal jt)

Tilt pelvis posteriorly

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Name the muscle and its origin and insertion

Hamstrings: Semimembranosus

Origin: Ischial tuberosity

Insertion: Posterior aspect of medial condyle of tibia

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Name the muscle and its actions

Hamstrings: Semimembranosus

Actions

Flex the knee (TF jt)

Medially rotate flexed knee (TF jt)

Extend hip (coxal jt)

Assist to medially rotate hip (coxal jt)

Tilt pelvis posteriorly

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Name the muscles and muscle group

Orange: Hamstring group

Green: Semitendinosus

Blue: Biceps femoris

Yellow: Semimembranosus

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Name the muscle and its origin and insertion

Gluteus Maximus

Origin: Coccyx, edge of sacrum, posterior iliac crest, sacrotuberous and sacroiliac ligaments

Insertion: Iliotibial tract (upper fibers) and gluteal tuberosity (lower fibers)

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Name the muscle and its actions

Gluteus Maximus

Actions:

All fibers:

Extend the hip (coxal jt)

Laterally rotate the hip (coxal jt)

Abduct the hip (coxal jt)

Lower Fibers:

Adduct the hip (coxal jt)

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Name the muscle and its origin and insertion

Gluteus Medius

Origin: Gluteal surface of ilium, between posterior and anterior gluteal lines, just below the iliac crest

Insertion: Lateral aspect of greater trochanter

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Name the muscle and its actions

Gluteus Medius

Actions

All fibers: Abduct the hip (coxal jt)

Anterior fibers:

Flex the hip (coxal jt)

Medially rotate the hip (coxal jt)

Posterior fibers:

Extend the hip (coxal jt)

Laterally rotate the hip (coxal jt)

Name the muscle and its origin and insertion

Gluteus Minimus

Origin: Gluteal surface of the ilium between the anterior and inferior gluteal lines

Insertion: Anterior aspect of greater trochanter

Name the muscle and its actions

Gluteus Minimus

Actions:

Abduct the hip (coxal jt)

Medially rotate the hip (coxal jt)

Flex the hip (coxal jt)

Name the muscle in red and its origin and insertion

Adductor magnus

Origin: Inferior ramus of the pubis, ramus of ischium and ischial tuberosity

Insertion: Medial lip of linea aspera and adductor tubercle

Name the muscle in red and its action

Adductor Magnus

Actions:

All:

Adduct the hip (coxal jt)

Medially rotate hip (coxal jt)

All except Gracilis: Assist to flex hip (coxal jt)

Posterior fibers of Adductor magnus:

Extend the hip (coxal joint)

Name the muscle in blue and its origin and insertion

Adductor Longus

Origin: Pubis tubercle

Insertion: Medial lip of linea aspera

Name the muscle in **green** and its actions

Adductor Longus Actions All: Adduct hip (coxal jt) Medially rotate hip (coxal jt) All (sans gracilis): Flex the hip (coxal jt)

Name the muscle in **green** and its origin and insertion

Adductor Brevis Origin: Inferior ramus of pubis Insertion: Pectineal line and medial lip of linea aspera

Name the muscle in **blue** and its actions

Adductor Brevis Actions All: Adduct hip (coxal jt) Medially rotate hip (coxal jt) All (sans gracilis): flex the hip (coxal jt)

Name the muscle in **orange** and its origin and insertion

Pectineus Origin: Superior ramus of pubis Insertion: Pectineal line of femur

Name the muscle in **orange** and its actions

Pectineus Actions All: Adduct hip (coxal jt) Medially rotate hip (coxal jt) All (sans gracilis): Flex the hip (coxal jt)

Name the muscle in **yellow** and its origin and insertion

Gracilis Origin: Inferior ramus of pubis Insertion: Proximal, medial shaft of tibia pes anserinus tendon

Name the muscle in **yellow** and its actions

Gracilis Actions All: Adduct hip (coxal jt) Medially rotate hip (coxal jt) Gracilis: Flex the knee Medially rotate flexed knee

Name the muscle and its origin and insertion

Tensor Fasciae Latae Origin: iliac crest posterior to ASIS Insertion: Iliotibial band/tract

Name the muscle and its actions

Tensor Fasciae Latae Actions: Flex hip Medially rotate hip Abduct hip

Name the muscle and its origin and insertion

Sartorius Origin: Anterior superior iliac spine Insertion: Proximal, medial shaft of the tibia at pes anserinus tendon

Name the muscle and its actions

Sartorius Actions: Flex the hip (coxal jt) Laterally rotate the hip (coxal jt Abduct the hip (coxal jt) Flex the knee (tibiofemoral jt) Medially rotate the flexed knee (TF jt)

Name the muscle and its origin and insertion

Lateral Rotator of Hip: Piriformis Origin: Anterior surface of sacrum Insertion: Superior aspect of greater trochanter

Name the muscle and its action

Lateral Rotator of Hip: Piriformis Actions: Laterally rotate the hip (coxal jt) Abduct the hip when hip is flexed

Name the muscle and its actions

Lateral Rotator Hip: Obturator externus Actions: Laterally rotate hip

Name the muscle and its actions

LRH: Quadratus femoris Actions: Laterally rotate hip (coxal)

Name the muscle and its actions

LRH: Obturator Internus Actions: Laterally rotate hip (coxal)

Name the muscle and its actions

LRH: Gemellus Superior Actions: Laterally rotate hip (coxal)

Name the muscle and its actions

LRH: Gemellus Inferior Actions: Laterally rotate hip (coxal)

Name the muscle in **green** and its origin and insertion

Ilipsoas: Psoas Major Origin: Bodies and transverse processes of lumbar vertebrae Insertion: Lesser trochanter

Name the muscle in **blue** and its origin and insertion

Ilipsoas: Iliacus Origin: Iliac fossa Insertion: Lesser trochanter

Name them muscles and their actions

Iliopsoas Green: Psoas Major Blue: Ilicus Actions: With origin fixed: Flex the hip (coxal) May laterally rotate the hip (coxal) With insertion fixed: Flex the trunk toward the thigh Tip pelvis anteriorly Psoas Major only: Assist to laterally flex the lumbar spine