ANATOMY

Detailed explanation-1: -An irregular bone is one that does not have any easily characterized shape and therefore does not fit any other classification. These bones tend to have more complex shapes, like the vertebrae that support the spinal cord and protect it from compressive forces.

Detailed explanation-2: -Irregular bones are composed of cancellous tissue encased in a thin layer of compact bone. The spinal cord is connected using irregular bones. The spine is the part of the body with the most irregular bones.

Detailed explanation-3: -The vertebrae (back bones) of the spine include the cervical spine (C1-C7), thoracic spine (T1-T12), lumbar spine (L1-L5), sacral spine (S1-S5), and the tailbone. Each vertebra is separated by a disc. The vertebrae surround and protect the spinal cord.

Detailed explanation-4: -Irregular Bones They are primarily spongy bone that is covered with a thin layer of compact bone. The vertebrae and some of the bones in the skull are irregular bones. All bones have surface markings and characteristics that make a specific bone unique.

Detailed explanation-5: -Answer and Explanation: Bones that surround the spinal cord are classified as a) irregular bones. Bones are classified into the following shapes: Short: equal in depth, length and width.