脊椎

1. Origins, structure, and basic meaning

• Structure: 脊椎, read せきつい, combines spine 脊 with vertebral bone 椎 as an anatomical name.
• Basic usage: It is the anatomical term for the connected spinal structure, as in 脊椎の形.

2. Common pitfalls and similar expressions

• Scope and context
  • Distinguish one vertebra 椎骨 from the complete vertebral column 脊椎.