The joints where your ribs meet your sternum (breastbone) are cartilaginous. The pubic symphysis joint that joins your still left and suitable pelvic bones jointly is another cartilaginous joint. Joints, comprised of bones and connective tissue, derive from embryonic mesenchyme. Bones acquire instantly through intramembranous ossification or indirectly via endochondral https://www.amazon.com/dp/B082XJ4R2F