The cardiovascular system, also known as the circulatory system, is responsible for delivering oxygen, nutrients, and hormones to the body's tissues and organs while removing waste products and carbon dioxide. Understanding the anatomy and physiology of the cardiovascular system is crucial for EKG technicians as it forms the foundation for interpreting EKG recordings and identifying potential abnormalities.
The cardiovascular system consists of the heart, blood vessels, and blood. The heart is a muscular organ that acts as a pump, continuously contracting and relaxing to circulate blood throughout the body. It is divided into four chambers: two atria (right and left) and two ventricles (right and left). The atria receive blood from the body and lungs, while the ventricles pump blood out to the rest of the body.
The blood vessels form a network of tubes that transport blood. Arteries carry oxygenated blood away from the heart, while veins re....
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