Question

Make the connection: your heart is dependent on oxygen from your respiratory system, and it is delivered by the(1 point)
Responses

circulatory system.
circulatory system.

respiratory system.
respiratory system.

nervous system.
nervous system.

muscular system.

Answer 1

The correct connection is: **circulatory system.**

Your heart pumps blood, which carries oxygen from the lungs (via the respiratory system) to the rest of the body.