Calcium and other minerals and cells
Bones are made up of a matrix of collagen fibers and minerals, primarily calcium and phosphorus. Inside bones, you will find bone marrow, which is responsible for producing blood cells and storing fat.
Bones can produce blood, which is made in the marrow, or the squishy stuff inside your bones
Blood is made inside your bones, and "refills" on oxygen inside your lungs.
The marrow inside your bones
No, breasts do not have bones. They are primarily made up of fatty tissue, glandular tissue, and ligaments. There are no bones in the breast area.
Your bones are made up into one big skeleton this is like a wire frame to help support your body and help protect your vital organs.
It depends what you are talking about - bone marrow is made in the bone itself, but bones are made when the body is inside the womb.
No, there are no spikes on the inside of the human skull. The skull is made up of bones that protect the brain, and it is smooth on the inside to provide a surface for the brain to rest against.
The human skull is made up of 22 bones, including the 8 cranial bones and 14 facial bones.
marrow
Yes
No, the human skeleton is made up of 206 bones.