ANATOMY

Detailed explanation-1: -Bone is made up of the following layers. The periosteum is a layer of fibrous tissue that covers the bone. Compact bone is the dense, hard, smooth outer part of a bone. It surrounds the medullary cavity and contains blood vessels and nerves.

Detailed explanation-2: -Compact bone is smooth, homogenous, and dense. Spongy bone has lots of needle like pieces called trabeculae and lots of spaces. We classify bones by their shape.

Detailed explanation-3: -Compact bone (also known as cortical bone) forms the hard, dense outer layer of bones throughout the human body. Compact bone functions primarily to provide strength and protection to bones, and it is one of two types of bone tissue. The other type of bone tissue is known as spongy bone.

Detailed explanation-4: -Compact Bone It can be found under the periosteum and in the diaphyses of long bones, where it provides support and protection. The microscopic structural unit of compact bone is called an osteon, or Haversian system. Each osteon is composed of concentric rings of calcified matrix called lamellae (singular = lamella).