頸椎

1. Origins, structure, and basic meaning

• Structure: 頸椎, read けいつい, combines neck 頸 with vertebra 椎 as an anatomical region name.
• Basic usage: It is the anatomical term for the vertebrae forming the neck portion of the spine, as in 頸椎の位置.

2. Common pitfalls and similar expressions

• Scope and context
  • It is the neck region within the full spine 脊椎, distinct from thoracic and lumbar vertebrae below.