Which of the following is NOT a function of the cardiovascular system?

The cardiovascular system, composed of the heart, blood vessels, and blood, serves several vital functions in the body. One of its primary roles is to transport oxygen from the lungs to the muscles and other tissues, which is essential for cellular respiration and energy production. It also removes carbon dioxide, a waste product of metabolism, from the tissues and transports it back to the lungs for exhalation.

In addition, the cardiovascular system plays a crucial role in regulating body temperature. It does this by adjusting blood flow to the skin and extremities, allowing the body to either dissipate heat or retain warmth as needed.

The option regarding carrying messages to muscles is not a function of the cardiovascular system. While the nervous system is responsible for transmitting signals that stimulate muscle contraction and coordination, the cardiovascular system does not partake in this communication. Instead, it focuses on the circulation of blood, which is vital for delivering nutrients and removing waste products rather than delivering neural messages.