Cardiovascular System

Mason Clark and Ibraheem Murtaza

Blood Pathway in the Heart

The HeartO 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 WorksO 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