| A | B |
|---|
| Transport | nvolves the circulation of materials throughout an organism |
| Arteries | Thick-walled, carry blood away from the heart |
| Veins | Thin-walled, carry blood toward the heart |
| Arteries | Carries oxygenated blood (high levels of oxygen) |
| Arterioles | Arteries divide into smaller vessels known as |
| Veins | Carries deoxygenated blood |
| Veins | Contain valves which help prevent the backflow of blood |
| Venules | Veins divide into smaller vessels known as |
| Capillaries | Very thin-walled (one cell thick) |
| Capillaries | Site for the exchange of materials between the blood and body cells |
| Capillaries | Connect arterioles and venules |
| Heart | It is a 4-chambered pump composed of 2 atria and 2 ventricles |
| Vena Cava | Brings deoxygenated blood from the upper portion of the body and into the right atrium |
| Right Atrium | Receives blood from the inferior and superior vena cava and pumps it into the right ventricle |
| Right Ventricle | Receives blood from the right atrium and pumps it into the pulmonary artery |
| Pulmonary Artery | Receives blood from the right ventricle and transports it to the lungs |
| Pulmonary Vein | Receives oxygenated blood from the lungs and transports it to the left atrium |
| Left Atrium | Receives blood from the pulmonary vein and pumps it into the left ventricle |
| Left Ventricle | Receives blood from the left atrium and pumps it into the aorta |
| Aorta | Receives blood from the left ventricle and transports it to the rest of the body |
| Septum | Separates the heart into a left side and a right side |
| Cardiovascular Diseases | Are diseases of the heart and blood vessels |
