The Skeletal System Takes Over the Master Role

Does “Rotation in Joints (Separate but at the Same Time)” apply to other types of joints, like, as a less intuitively understandable case, the spine? The spine is not one single piece but “consists of 24 articulating vertebrae, and 9 fused vertebrae in the sacrum and the coccyx” (refer to http://en.wikipedia.org/wiki/Human_vertebral_column). The gap between anyContinue reading “The Skeletal System Takes Over the Master Role”