Medical Dictionary
Main Entry:
spinalis tho·ra·cis Pronunciation:
-th&-'rA-s&s Function:
noun : an upward continuation of the sacrospinalis that issituated medially to and blends with the longissimus thoracis, arises from the spinous processes of the first two lumbar and last two thoracic vertebrae, and inserts into the spinous processes of theupper thoracic vertebrae