Question

which statement provides the best evidence that the respiratory system and circulatory system work together to carry out their functions and maintain homeostasis? a in response to increased body temperature, breathing rate increases and the skin begins to excrete sweat. b in response to viral infection, antibodies are manufactured and released in the bloodstream to fight the infection in the body. c in response to exercise, breathing rate increases because there is an increased demand for oxygen to be carried through the body. d in response to hunger, signals are sent to the stomach, which empties its contents into the small intestine to be broken down and carried to the cells of the body.

Explanation:

Homeostasis is the maintenance of a stable internal environment. The respiratory system takes in oxygen and expels carbon - dioxide, and the circulatory system transports oxygen and nutrients to cells and removes waste. When body temperature increases as in option A, the respiratory rate increases to expel more heat - related carbon - dioxide and the skin sweating helps with cooling, showing the interaction of these systems to maintain homeostasis. Options B, C, and D involve other body systems or responses not directly related to the joint function of the respiratory and circulatory systems for homeostasis.

Answer:

A. In response to increased body temperature, breathing rate increases and the skin begins to excrete sweat.