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Stack #60674, week 6
Stack #60674, week 6 muscles
| muscle | origin | insertion | action | nerve |
|---|---|---|---|---|
| Spinalis capitis | arises with semispinalis capitis | occipital bone | acting together, muscles of each region (C,T,L) extend vertebral column of that region | cervical and superior thoracic spinal nerves |
| Spinalis cervicus | ligamentum nuchae and spinous process of C7 | spinous process of axis | acting together, muscles of each region extend vertebral column of that region | inferior cervical and thoracic spinal nerves |
| Spinalis thoracis | spinous processes of superior lumbar and inferior thoracic vertebrae | spinous processes of superior thoacic spinal vertebrae | acting together, muscles of each extend vertebral column of that region | thoracic spinal nerves |
| Popliteus | lateral condyle of femur | proximal tibia | flexes leg at knee and medially rotates tibia to unlock the extended knee | tibial nerve |
| Plantaris | Femur superior to lateral condyle | calcaneus by way of calcaneal tendon | plantar flexes foot at ankle and flexes leg at knee | tibial nerve |