Which of the Following Bones is Classified as "Irregular" in Shape

Question

Which of the following bones is classified as "irregular" in shape?
A)patella
B)frontal
C)vertebra
D)metatarsal
E)ulna

Accepted Answer

The vertebra is a bone that is classified as "irregular" in shape due to its complex structure and unique shape. The other options are classified as "long" (patella and metatarsal), "flat" (frontal), or "long and thin" (ulna) in shape.