There are four normal classifications of joint actions. Based mostly on their own location, joints can either: Joints, comprised of bones and connective tissue, derive from embryonic mesenchyme. Bones produce right through intramembranous ossification or indirectly by endochondral ossification. Mesenchymal cells immediately differentiate into bone-creating cells all through intramembr... https://www.amazon.com/dp/B082XJ4R2F