No, 7 is not a false rib.
Rib Classification
Understanding rib classification is crucial for answering this question. Ribs are categorized based on how they connect to the sternum (breastbone).
| Rib Type | Rib Numbers | Connection to Sternum |
|---|---|---|
| True Ribs | 1-7 | Directly via costal cartilage |
| False Ribs | 8-12 | Indirectly or not at all via costal cartilage |
True Ribs
- Ribs 1-7 are called true ribs or vertebrosternal ribs.
- Each of these ribs has its own costal cartilage that attaches directly to the sternum.
False Ribs
- Ribs 8-12 are called false ribs or vertebrochondral ribs.
- Their costal cartilages do not attach directly to the sternum.
- The cartilages of ribs 8-10 attach to the cartilage of the rib above them.
- Ribs 11 and 12 are also known as floating ribs, they have no anterior attachment.
Rib Number 7
According to the provided reference, ribs 1-7 are classified as true ribs. Thus, rib number 7 is a true rib, as it attaches directly to the sternum through its own costal cartilage.
