The cardiovascular system is made up of the heart , the blood vessels , and the blood that flows through them.

Quick Scoop: Core Parts

  • Heart : A muscular pump that keeps blood moving around your body, with four chambers (two atria and two ventricles) and valves that prevent backflow.
  • Blood vessels :
    • Arteries carry blood away from the heart.
* Veins return blood to the heart.

* Capillaries are tiny vessels where oxygen, nutrients, and wastes are exchanged with tissues.
  • Blood : The circulating fluid made of plasma and cells (red blood cells, white blood cells, platelets) that transports oxygen, nutrients, hormones, and waste products.

These components work together as two main circuits:

  1. Systemic circulation – carries blood between the heart and the rest of the body.
  1. Pulmonary circulation – carries blood between the heart and the lungs for gas exchange.

In simple terms, the cardiovascular system is your body’s delivery and cleanup network, powered by the heart, using vessels as highways, and blood as the transport fluid.

TL;DR: The cardiovascular system = heart + blood vessels (arteries, veins, capillaries) + blood, organized into systemic and pulmonary circuits that move materials to and from every cell.

Information gathered from public forums or data available on the internet and portrayed here.