Answer:
I believe it is respiratory, digestive, excretory, and endocrine.
Explanation:
Here is what my text says for reference:
"The cardiovascular system is often called the circulatory system. It works with almost all the body's organ systems. In addition to carrying oxygen for the respiratory system, blood transports nutrients from the digestive system to cells all over the body. It carries hormones for the endocrine system, waste for the excretory system, and white blood cells for the immune system."
I hope this helps so have a purrrfect day!
