How many bones fuse to form the sacrum (in most individuals)?Multiple choice question.34567

Break Down the Problem

1. Identify the total number of bones that contribute to the sacrum in adults.
2. Determine how many of these bones typically fuse together during development.

Relevant Concepts

• The sacrum is a triangular bone located at the base of the spine, formed by the fusion of several vertebrae.
• In infants, the sacrum consists of multiple individual vertebrae that fuse as they grow.

Analysis and Detail

1. The sacrum is usually composed of 5 sacral vertebrae (S1-S5) in infants.
2. These vertebrae typically fuse together by late adolescence or early adulthood to form a single sacral bone.

Verify and Summarize

The total number of bones that fuse to form the sacrum is 5 in most individuals. The fusion is complete, resulting in one solid bone.

Final Answer

5 bones fuse to form the sacrum in most individuals.