Q: Are ribs mobile? ¶
A: Yes, and a contraction of the diaphragm elevates the ribs, which works in conjunction with other muscles to expand the thoracic indent upward.
Q: Are ribs found only as tiny remnants fused to the vertebrae? ¶
A: Yes, where they are referred to as transverse processes.
Q: Were ribs stout and short? ¶
A: Yes, since they formed part of the pelvis, connecting the backbone to the hip bones.
Q: Are ribs present as distinct bones only on the thoracic region? ¶
A: Yes, although small fused ribs are present on the cervical vertebrae.
Q: Are ribs never found in mammals? ¶
Q: Are ribs also present in monotremes? ¶