AAPC Anatomy Practice Exam 2025 – Complete Test Prep Resource

The cardiovascular system plays a crucial role in the transport of nutrients and oxygen throughout the body. It consists of the heart, blood vessels, and blood, working together to circulate these essential substances to tissues and organs, ensuring they receive the energy and elements needed for proper function.

The heart pumps oxygenated blood from the lungs through the arteries into various bodily tissues, delivering not just oxygen but also vital nutrients absorbed from the digestive tract. This function is fundamental to maintaining cellular metabolism and overall homeostasis within the body.

While respiration, digestion, and endocrine signaling are important physiological processes, they are not the primary functions of the cardiovascular system. Respiration primarily involves gas exchange in the lungs, digestion encompasses the breakdown and absorption of food, and endocrine signaling pertains to hormone production and regulation throughout the body. Each of these systems may interact with the cardiovascular system but does not define its main role.