What segment is located between the tuber sacrales in the equine spine?

What segment is located between the tuber sacrales in the equine spine?

• A. S1
• B. S2
• C. S3
• D. L5

Answer: (A)

The tuber sacrale are the lateral prominences at the cranial edge of the sacrum where the pelvis articulates. The first sacral vertebra is positioned directly between these two tuber sacrale, making it the segment that sits between them. S2 and S3 are further caudal along the sacrum, and L5 is a lumbar vertebra located before the sacral region, not between the tuber sacrale. So the segment between the tuber sacrales is the first sacral vertebra.

The tuber sacrale are the lateral prominences at the cranial edge of the sacrum where the pelvis articulates. The first sacral vertebra is positioned directly between these two tuber sacrale, making it the segment that sits between them. S2 and S3 are further caudal along the sacrum, and L5 is a lumbar vertebra located before the sacral region, not between the tuber sacrale. So the segment between the tuber sacrales is the first sacral vertebra.