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Anatomy and Cell Biology
Anatomy and Cell Biology 3319
Peter Merrifield

Anatomy NotesJan 2612 Muscles of the medial compartment of the thighgroin muscles All adduct the thigh at the hip as when riding a horse When walking there is subtle adductor movement of the thigh Superficial grouppectineus adductor longus both also flex the thigh at the hip and gracilis also crosses knee joint to flex the leg Deep groupadductor brevis flexes thigh and adductor magnus extends thigh Adductor longus superficial The most anterior of the adductor muscles Opubis near pubic symphysis Ilinea aspera of femur Actionadducts flexes and medially rotates the thigh Innervationobturator nerve L2L4 The obturator nerve passes through the obturator foramen in the pelvis Pectineus superficial Overlies the adductor brevis Opectineal line of the pubis Ialong the lesser trochanter to the linea aspera on the posterior femur Actionadducts flexes and medially rotates the thigh Innervation femoral nerve and sometimes the obturator nerve Gracilis superficial Is a long and thin muscle Oinferior ramus and body of pubis and ischial ramus Imedial surface of tibia Actionadducts thigh flexes and medially rotates leg especially during walking Innervationobturator nerve L2L4 Adductor brevis deep Concealed by the adductor longus and pectineus Oinferior ramus and body of pubis Ilinea aspera Actionadducts and medially rotates the thigh Innervationobturator nerve Adductor magnus deep Is a composite muscle Oischial and pubic rami and ischial tuberosity Ilinea aspera supracondylar line and adductor tubercle of femur Actionanterior fibres adduct and medially rotate and flex thigh posterior fibres are synergistic with the hamstrings during thigh extension Innervationobturator nerve and sciatic nerve Posterior muscles of the thigh with origin on the pelvisbutt muscles gluteus maximus major extens
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