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 ...

Your bone marrow function can be evaluated based on blood ... Your bone marrow is a spongy material located in the cavities of your bones. Bone marrow has many important roles, including producing ...