Question

1. select an irregular bone. dissect submit answer

Explanation:

Irregular bones have complex shapes and don't fit other bone categories. Vertebrae (like the spinal vertebrae shown) or pelvic bones (like the sacrum, part of the pelvis) are irregular. From the skeleton, a vertebra (e.g., one of the spinal bones) or the sacrum/coccyx (part of the pelvis) is irregular. For example, the vertebrae (the stacked bones in the spine) are irregular bones due to their unique, non - standard shape that supports the spine and protects the spinal cord.

Answer:

A vertebra (e.g., one of the spinal bones) or the sacrum (part of the pelvis) is an irregular bone. If selecting from the skeleton, a vertebra (the bones of the spine) can be chosen as an irregular bone.