This is the 15061st most frequent Russian word.
позвонки
Vertebrae.
In this sentence, 'позвонки' refers to the bones forming the spinal column in anatomy.
Позвонки в человеческом позвоночнике обеспечивают гибкость и устойчивость.
The vertebrae in the human spine provide flexibility and stability.
Here, 'позвонки' is used to describe the specific parts of the spine affected by an injury.
После падения с лестницы у него были повреждены позвонки.
After falling from the stairs, his vertebrae were damaged.
'Позвонки' in this case denotes an anatomical feature in comparative biology regarding different species.