What is NOT a function of the circulatory system?

The circulatory system plays several vital roles in maintaining homeostasis within the body, and producing hormones is not one of its functions. Instead, the circulatory system primarily focuses on the transportation of blood, which carries essential substances such as oxygen, nutrients, and waste products to and from cells throughout the body.

Some specific functions include the carrying of oxygen to body cells, which is crucial for cellular respiration and energy production, as well as transporting nutrients that are absorbed from the digestive system to cells for growth and repair. Additionally, it plays a critical role in the removal of waste products like carbon dioxide and other metabolic byproducts, ensuring that these substances do not accumulate to toxic levels.

While hormones are important for signaling and regulating various bodily functions, they are produced primarily by endocrine glands and transported through the bloodstream by the circulatory system after their production. Thus, the circulatory system's function is supportive of hormone transportation but does not encompass the process of hormone production itself.