The system brings oxygen into the body and adds it to the blood, so the circulatory system can deliver it to all the cells of the body. * Nervous
Endocrine
Integumentary
Reproductive
Skeletal
Digestive
Muscular
Excretory
Respiratory

The Respiratory system brings oxygen into the body and adds it to the blood, so the circulatory system can deliver it to all the cells of the body :3

Explanation:

:3

Respiratory??

Explanation:

Your cardiovascular system works to circulate your blood while your respiratory system introduces oxygen into your body. But i don't see any options for circulatory so its most likely Respiratory.

ia. mver.y..sor .r..yinee..i am.ina.rush.pleas eforg.ive   meiknowiama. nas.s holei apalo.gize