The thyroid cartilage is from C4 to C5. 
The cricoid cartilage is from C6 to C7.
What do the cervical vertebrae refer to?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: What do the cervical vertebrae refer to? [/INST] \n The thyroid cartilage is from C4 to C5. 
The cricoid cartilage is from C6 to C7.</s>