Question

The lungs deliver oxygen to the blood, which transports it to all the cells in the body. This is an example of which two systems working together?

A Circulatory and Muscular
B Nervous and Endocrine
C Respiratory and Circulatory
D Respiratory and Nervous

Answer 1

C.

Step-by-step explanation:

Respiratory and Circulatory. Respiratory includes the lungs delivering oxygen to the blood. Circulatory includes blood which is circulated throughout the entire body.