Question

lewis is running in a race. his muscles need oxygen. which best describes how multiple systems interact to bring him into homeostasis?
the circulatory system brings oxygen to the respiratory system, which delivers oxygen to the muscular system.
the respiratory system brings oxygen to the circulatory system, which delivers oxygen to the muscular system.
the respiratory system brings oxygen to the circulatory system, which delivers oxygen to the skeletal system.
the circulatory system brings oxygen to the respiratory system, which delivers oxygen to the skeletal system.

Explanation:

The respiratory system is responsible for taking in oxygen from the environment. Once oxygen is in the body, the circulatory system (specifically the blood) transports this oxygen. The muscular system (in this case, Lewis's muscles during running) needs oxygen for cellular respiration (to produce energy). The skeletal system's main functions are support, protection, and movement (through attachment to muscles), but in the context of oxygen delivery for muscle function during running, the key interaction is between respiratory (taking in oxygen) and circulatory (delivering oxygen) systems for the muscular system.

Answer:

The respiratory system brings oxygen to the circulatory system, which delivers oxygen to the muscular system.