Florida Basic Recruit Training Program High Liability (First Aid) Practice Exam

What does the circulatory system function to remove from the body's tissues?

1. Nutrients

2. Oxygen

3. Waste

4. Hormones

The correct answer is: Waste

The circulatory system plays a crucial role in maintaining homeostasis by facilitating the transportation of various substances throughout the body. One of its key functions is to remove waste products from the body's tissues. When cells metabolize nutrients for energy, they produce waste products such as carbon dioxide and urea. If these waste products are not removed efficiently, they can accumulate and lead to toxic conditions within the tissues. The circulatory system, consisting of the heart, blood, and blood vessels, carries these wastes away from the cells and transports them to excretory organs, such as the lungs (to expel carbon dioxide) and the kidneys (to filter urea and other wastes from the blood for excretion). By effectively removing waste, the circulatory system helps to sustain cellular function and overall health, making it essential in the body's detoxification processes. This functionality underscores the importance of the circulatory system in supporting life by ensuring that tissues remain healthy and capable of performing their functions.