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25 Cards in this Set
- Front
- Back
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Adductor Longus innervation
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Obturator nerve
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Quadratus Femoris origin and insertion
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origin: Ischial tuberosity; insertion: Greater trochanter of femur
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Adductor Magnus action
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Anterior part adducts and laterally rotates and flexes thigh; posterior part is a synergist of hamstrings in thigh extension
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Adductor Magnus innervation
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Obturator nerve and sciatic nerve
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Gemellus origin and insertion
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origin: Ischial spine (superior); insertion: Greater trochanter of femur
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Quadratus Femoris action
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Rotates thigh laterally and stabilizes hip joint
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Quadratus Femoris innervation
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L5, S1
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Obturator Internus origin and insertion
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origin: Inner surface of obturator membrane, greater sciatic notch, and margins of obturator foramen; insertion: Greater trochanter in front of piriformis
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Gemellus action
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Rotates thigh laterally and stabilizes hip joint
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Gemellus innervation
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L4, L5, S1
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Obturator Externus origin and insertion
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origin: Outer surface of obturator membrane; external surface of pubis and ischium, and margins of obturator foramen; insertion: By a tendon into trochanteric fossa of posterior femur
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Obturator Internus action
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As for obturator externus
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Obturator Internus innervation
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L5, S1
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Piriformis origin and insertion
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origin: Anterolateral surface of sacrum (opposite greater sciatic notch); insertion: Superior border of greater trochanter of femur
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Obturator Externus action
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Rotates thigh laterally and stabilizes hip joint
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Obturator Externus innervation
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Obturator nerve
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Gluteus Minimus origin and insertion
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origin: Between anterior and inferior gluteal lines on external surface of ilium; insertion: Anterior border of greater trochanter of femur
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Piriformis action
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Rotates thigh laterally; since inserted above head of femur, can also assist in abduction of thigh when hip is flexed; stabilizes hip joint
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Piriformis innervation
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S1, S2, L5
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Gluteus Medius origin and insertion
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origin: Between anterior and posterior gluteal lines on lateral surface of ilium; insertion: By short tendon into lateral aspect of greater trochanter of femur
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Gluteus Minimus action
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As for gluteus medius
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Gluteus Minimus innervation
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Superior gluteal nerve
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Gluteus Maximus origin and insertion
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origin: Dorsal ilium, sacrum, and coccyx; insertion: Gluteal tuberosity of femur; iliotibial tract
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Gluteus Medius action
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Abducts and medially rotates thigh; steadies pelvis; its action is extremely important in walking; e.g., muscle of limb planted on ground tilts or holds pelvis in abduction so that pelvis on side of swinging limb does not sag; the foot of swinging limb can thus clear the ground
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Gluteus Medius innervation
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Superior gluteal nerve
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