A cervical rib is a supernumerary (extra) rib which arises from the seventh cervical vertebra. It is a congenital abnormality located above the normal first rib.
What is meant by cervical rib?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: What is meant by cervical rib? [/INST] \n A cervical rib is a supernumerary (extra) rib which arises from the seventh cervical vertebra. It is a congenital abnormality located above the normal first rib.</s>