Question

question 69
which of the following bones is considered a irregular bone?
a cranial bones
b patella
c vertebra
d humerus
e metacarpals

Explanation:

• Cranial bones: These are flat bones. They form the protective skull covering.
• Patella: This is a sesamoid bone. It is a small bone embedded within a tendon (in this case, the tendon of the quadriceps muscle).
• Vertebra: Vertebrae have complex shapes that do not fit neatly into the categories of long, short, or flat bones. They have various projections (spinous, transverse processes) and a body, which makes them irregular bones.
• Humerus: This is a long bone. It has a shaft (diaphysis) and two ends (epiphyses).
• Metacarpals: These are long bones. They are part of the hand bones and have the typical structure of long bones with a central shaft and expanded ends.

Answer:

C. vertebra