Vitamin D is important for proper calcium absorption from the gut into the blood so the calcium can be incorporated into bone mineral matrix. Bones will be soft and bowed. Mature bone is relatively dead, that is non-dynamic. The bone marrow. Erythropoiesis Shin splints occur when microscopic tears occur to sharpey's fibers Tendons connect muscle to bone, whereas ligaments connect bone to bone.
Mature bone is relatively dead, that is non-dynamic.
Concentric rings, with a central blood vessel.