Final answer:
The cardiorespiratory system functions include oxygen transport, carbon dioxide exchange, and waste elimination but not nutrient absorption.
Step-by-step explanation:
The functions of the cardiorespiratory system include oxygen transport, carbon dioxide exchange, and waste elimination. The system does not directly handle nutrient absorption; that is primarily the function of the digestive system. This system is essential for maintaining homeostasis within the body by ensuring that every cell receives the necessary oxygen for aerobic cellular respiration and by removing carbon dioxide, a waste product of this process.
The blood receives oxygen in the lungs and then is pumped by the heart throughout the body. Oxygen then diffuses into the cells, which use it to produce energy. Meanwhile, carbon dioxide moves from the cells into the blood, to be transported to the lungs for exhalation. The circulatory system also equally plays a role in transporting hormones and maintaining body temperature.