ANATOMY

Detailed explanation-1: -The four principal types of bones are long, short, flat and irregular.

Detailed explanation-2: -Of the above answer choices, the one that is not a type of bone is A. Round. An example of a flat bone is the sternum, an example of a long bone is the femur, and an example of a short bone is a carpal or tarsal.

Detailed explanation-3: -The bones of the human skeleton are classified by their shape: long bones, short bones, flat bones, sutural bones, sesamoid bones, and irregular bones (Figure 1).

Detailed explanation-4: -The adult human skeleton usually consists of 206 named bones. These bones can be grouped in two divisions: axial skeleton and appendicular skeleton. The 80 bones of the axial skeleton form the vertical axis of the body. They include the bones of the head, vertebral column, ribs and breastbone or sternum.

Detailed explanation-5: -Long bone – has a long, thin shape. Short bone – has a squat, cubed shape. Flat bone – has a flattened, broad surface. Irregular bone – has a shape that does not conform to the above three types.