Question

18 the humerus is an example of a(n) ________ bone.

multiple choice

• irregular
• sesamoid
• flat
• short
• long

Explanation:

Identify the bone and its structural characteristics

Using the Bone Classification knowledge point

• The humerus is the upper arm bone extending from the shoulder to the elbow.
• It features a central shaft (diaphysis) and two expanded ends (epiphyses), which is the defining structural characteristic of a long bone.

Evaluate the given classification options

Using the Bone Classification knowledge point

• irregular: Bones with complex shapes (e.g., vertebrae).
• sesamoid: Small, round bones embedded in tendons (e.g., patella).
• flat: Thin, flattened, and usually curved bones (e.g., sternum).
• short: Cube-like bones roughly equal in length and width (e.g., carpals).
• long: Bones that are longer than they are wide, consisting of a shaft with heads at both ends (e.g., humerus).

Answer:

• irregular
• sesamoid
• flat
• short
• long (Correct answer)