Which system aids in transferring nutrients and oxygen to the body and removing waste products?

The circulatory system is critically important for transporting nutrients, oxygen, and waste products throughout the body. It consists of the heart, blood vessels, and blood, which work together to maintain the flow of materials necessary for cellular function. Oxygen is taken up in the lungs and then carried by red blood cells to various tissues, where it is used for energy production. At the same time, carbon dioxide, a waste product of this process, is collected and transported back to the lungs for exhalation.

Additionally, the circulatory system transports essential nutrients absorbed from the digestive system to cells throughout the body. It also plays a role in removing metabolic wastes, such as urea and lactic acid, that are transported to the kidneys and liver for excretion.

The other systems listed do not perform this function. The nervous system is primarily responsible for controlling body functions and responses through signals; the excretory system focuses on eliminating waste from the body but does not transport nutrients or oxygen; and the reproductive system is involved in producing offspring and does not have a role in nutrient or waste transport. Thus, the circulatory system is the vital network that ensures that cells receive the substances they need while simultaneously removing waste products.