Question

identify the structure labeled
.\ diagram of ribcage with labels a, b, c, d, e, f, g, h, i, j, k, l, m, n, o options: vestigial ribs, floating ribs, costal ribs, true ribs

Explanation:

To identify the structure labeled "n", we analyze the rib types:

• Vestigial ribs are non - typical and not the case here.
• Floating ribs (11th and 12th pairs) are labeled "n" as they don't attach to the sternum or other ribs anteriorly.
• Costal ribs is not a standard rib classification term.
• True ribs (1 - 7) attach directly to the sternum, which is not "n". So the correct answer is Floating ribs.

Answer:

B. Floating ribs