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24 Cards in this Set
- Front
- Back
Iliopsoas
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Composite muscle consisting of iliacus and psoas major. Prime mover in thigh flexion. Fills anterior hip bone.
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Iliacus
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Lateral portion of iliopsoas. Fan-shaped, fills anterior hip bone.
O: iliac fossa and crest, lateral sacrum I: lesser trochanter & below on femur via iliopsoas tendon A: prime mover of thigh flexion and trunk flexion (bowing) |
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Psoas Major
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Longer, thicker, more medial muscle of the iliopsoas ("Tenderloin")
O: transverse processes/bodies/discs of lumbar vertebrae and T12 I: lesser trochanter of femur via iliopsoas tendon A: Prime mover in flexion of thigh, flexion of trunk (bowing) |
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Sartorius
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Straplike superficial muscle running obliquely across anterior surface from thigh to knee
O: anterior superior iliac spine I: medial aspect of proximal tibia via long tendon A: Flexes, abducts, and laterally rotates thigh |
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Adductors
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Large muscle mass consisting of 3 muscles (magnus, longus, brevis) forming medial aspect of thigh. Adduction, flexion, and medial rotation of thigh.
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Adductor Magnus
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Composite triangular muscle of inner thigh.
O: ischial and pubic rami, ischial tuberosity I: linea aspera and adductor tubercle of femur A: adduction and medial rotation of thigh |
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Adductor Longus
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Muscle overlying the middle aspect of the adductor magnus. Most superficial/anterior of adductor muscles.
O: near pubic symphysis of pubis I: linea aspera of femur A: adduction, flexion, and medial rotation of thigh |
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Adductor Brevis
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Small muscle of inner thigh mostly concealed by adductor longus and pectineus.
O: Body and inferior ramus of pubis I: linea aspera of femur above adductor longus A: adducts and medially rotates thigh |
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Pectineus
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Short, flat muscle overlying the adductor brevis on the proximal thigh
O: superior ramus of pubis I: lesser trochanter to linea aspera of femur A: adducts, flexes, and medially rotates thigh |
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Gracilis
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Long, thin, superficial muscle on most medial aspect of thigh.
O: inferior ramus and body of pubis, ischial ramus I: medial surface of tibia inferior to medial condyle A: Adducts, flexes, and medially rotates thigh |
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Quadriceps Femoris
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Flesh of the front and sides of the thigh sharing a common insertion tendon.
Consists of four separate heads: rectus femoris, vastus lateralis, vastus medialis, vastus intermedius. Knee extensor and joint strengthener. |
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Rectus Femoris
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Most superficial quad, running straight down the thigh. Blatantly bipennate.
O: anterior inferior iliac spine and superior margin of acetabulum I: patella and tibial tuberosity via patellar ligament A: knee extensor, thigh flexor (at hip) |
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Vastus Lateralis
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Largest and most lateral quad, forms the lateral aspect of the thigh.
O: greater trochanter, intertrochanteric line, and linea aspera of femur I: patella and tibial tuberosity via patellar ligament A: Extends and stabilizes knee |
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Vastus Medialis
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Deep, medial quad. (Deep and medial to rectus femoris)
O: linea aspera and intertrochanteric line of femur I: patella and tibial tuberosity via patellar ligament A: extends knee |
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Vastus Intermedius
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Deep quad obscured by rectus femoris. Lies between vastus lateralis and medialis on anterior thigh.
O: anterior/lateral surfaces of proximal femur shaft I: patella and tibial tuberosity via patellar ligament A: extends knee |
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Tensor Fasciae Latae
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Muscle enclosed between fascia layers of anterolateral aspect of thigh. Tendon sheet tensor.
O: anterior aspect of iliac crest and anterior superior iliac spine I: ITB/fascia latae A: flexes and abducts thigh (iliopsoas and gluteus min/max synergist) |
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Fasciae Lata / Ileotibial Band (ITB)
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Fascia that ensheathes all the muscles of the thigh. Extends as a tendinous band from the iliac crest to the knee.
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Gluteous Medius
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Thick muscle largely covered by the gluteus maximus. Covers posterior hip bone.
O: between anterior and posterior gluteal lines on lateral surface of ilium. I: by short tendon to lateral aspect of greater trochanter of femur A: abducts and medially rotates thigh |
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Piriformis
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Pyramidal muscle located on posterior aspect of hip joint, inferior to gluteus minimus.
O: anterolateral surface of sacrum (opposite of greater sciatic notch) I: superior border of greater trochanter of femur A: rotates thigh laterally when extended |
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Hamstrings
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Fleshy muscles of the posterior thigh that act in thigh extension and knee flexion.
Biceps femoris, semimembranous, semitendinosus |
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Biceps Femoris
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Most lateral hamstring
O: iscial tuberosity I: head of fibula and lateral condyle of tibia via common tendon A: extension of thigh, flexion of knee |
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Semitendinosus
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Hamstring medial to the biceps femoris. Long, slender, superficial to semimembranous.
O: ischial tuberosity I: medial aspect of upper tibial shaft A: extension of thigh at hip, flexion of knee |
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Semimembranosus
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Broad muscle deep to semitendinosus. Most medial hamstring.
O: ischial tuberosity I: medial condyle of tibia A: extension of thigh, flexion of knee |
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Gluteus Maximus
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Largest and most superficial of gluteus muscles. Form bulk of buttock mass.
O: dorsal ilium, sacrum, and coccyx I: gluteal tuberosity of femur A: major extensor of thigh |