Question

make the connection: your heart is dependent on oxygen from your respiratory system, and it is delivered by the (1 point) muscular system. circulatory system. respiratory system. nervous system.

Explanation:

The heart needs oxygen to function. The respiratory system takes in oxygen from the air and the circulatory system is responsible for transporting oxygen - rich blood to the heart. The question is asking which system delivers oxygen to the heart, and that is the circulatory system.

Answer:

circulatory system.