EVERYDAY SCIENCE

Detailed explanation-1: -flat bone . Long bones are the most numerous in the skeletal system.

Detailed explanation-2: -All of the bones in the arms and legs, except the patella, and bones of the wrist, and ankle, are long bones.

Detailed explanation-3: -Long bones, such as the femur, are longer than they are wide. Short bones, such as the carpals, are approximately equal in length, width, and thickness. Flat bones are thin, but are often curved, such as the ribs. Irregular bones such as those of the face have no characteristic shape.

Detailed explanation-4: -The outside of the bone consists of a layer of connective tissue called the periosteum. Additionally, the outer shell of the long bone is compact bone, then a deeper layer of cancellous bone (spongy bone) which contains in the medullary cavity the bone marrow.