Cardiovascular System Mason Clark and Ibraheem Murtaza

Blood Pathway in the Heart

The Heart O Strongest organ in the body. O A hollow muscular organ, which is composed of “chamber, rooms, and doors” which regulate blood flow and pressure throughout the heart and the system. O Its main job is to pump blood throughout the body. O Weighs approximately 250g. And is about the size of your fist. O Beats 100,000 times in a day and roughly 2.5 billion times in a lifetime.

How the Heart Works O The heart works as a pump, pumping blood throughout our body through a network of blood vessels. O The heart runs on a conduction system, which signals its contraction and what gives it its “Bum-Bum!”.

Aorta Largest blood vessel in body Supplies body with oxygenated blood

Arteries Carry oxygenated blood to body Blood vessels

Arterioles Smaller blood vessels Carry oxygenated blood Break off from arteries

Atrium The upper chambers in the heart

Blood Carry oxygen and nutrients throughout the body Pumped by the heart

Capillaries Smallest blood vessels Walls are only one cell thick Connect veins and arteries

Vein Blood vessels Carry deoxygenated blood back to the heart

Vena Cava Main vein in body Carries deoxygenated blood into the right atrium

Ventricle The lower chamber of the heart Pumps blood to the rest of the body

Venules Connect arteries to veins to return blood to heart