Question

Which of the following does not have corresponding bones?

• A. Pelvic and pectoral girdle
• B. Atlas and coccyx
• C. Carpals and tarsals
• D. Humerous and femur

Answer 1

The correct option is B Atlas and coccyx

The atlas ($C_1$) is the most superior (first) cervical vertebra of the spine. The atlas's chief peculiarity is that it has no body. It is ring like and consists of an anterior and a posterior arch and two lateral masses. The coccyx commonly referred to as the tailbone is the final segment of the vertebral column in humans and apes. It comprises of three to five separate or fused coccygeal vertebrae below the sacrum. As, both atlas and coccyx are the two first and last bones respectively of the vertebral column they do not have corresponding bones.

So, the correct answer is 'Atlas and coccyx'