Head coach Katarina sprints onto the court to do an initial survey of her star basketball player, Sheryl, who has collapsed. Which vital system is the HIGHEST priority for Katarina to immediately assess?

The first priority when someone collapses is to check whether they are breathing, so Katarina should immediately assess the respiratory system. If Sheryl is not breathing normally, she needs emergency care and CPR. The circulatory system is also important, but breathing is checked first in the initial survey.

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