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12 Cards in this Set

  • Front
  • Back
Piriformis
origin
Anterior surface of sacrum
Piriformis
insertion
Greater trochanter of femur
Piriformis
innervation
Sacral plexus
Piriformis
action
Laterally rotates thigh at hip, abducts thigh, stabilizes head of femur in acetabulum
Obturator internus
origin
Pelvic surfaces of obturator membrane and surronding bony wall
Obturator internus
insertion
Greater trochanter of femur
Obturator internus
innervation
sacral plexus
Obturator internus
action
Laterally rotates thigh at hip, stabilizes head of femur in acetabulum
Coccygeus
origin
Ischial spine
Coccygeus
insertion
Inferior end of sacrum
Coccygeus
innervation
sacral plexus
Coccygeus
action
Forms part of pelvic diaphram