Answer:
"true ribs" or "vertebrosternal ribs."
Step-by-step explanation:
Ribs that have their own coastal cartilages are called "true ribs" or "vertebrosternal ribs." These ribs are directly connected to the sternum (breastbone) via their own separate cartilaginous extensions, known as coastal cartilages. Typically, there are seven pairs of true ribs in the human ribcage.