Human bones have a hard outer layer made of condensed bone and a softer inner core of spongy bone. This landscape of blue, red, and gold is a cross section through a developing human bone. Human bones ...

but differences in their makeup and function set them apart. For instance, teeth contain enamel, a substance much harder than bone. Despite their solid appearance, bones contain a spongy inner ...

Cartilage is a soft, spongy connective tissue. The articular capsule prevents wear and tear on the bones. The bones in a synovial joint are connected by ligaments, which: are a type of connective ...