circulatory system

• oxygen rich blood from the lungs goes to the left side of the heart. first through the left atrium and then to your left ventricle. from there it is pumped to the rest of your body through the aorta. the oxygenated blood moves through your body where oxygen is lost and carbon dioxide is gained. the deoxygenated blood returns to your heart through the right atrium and is pumped back to your lungs from the right ventricle. when the blood gets to the lungs it collects oxygen and releases CO2, starting the process again
• oxygenated blood from lungs ➡️ pulmonary veins ➡️ left atrium ➡️ left ventricle ➡️ aorta ➡️ body ➡️ deoxygenated blood ➡️ right atrium ➡️ right ventricle ➡️ pulmonary arteries ➡️ lungs
• the heart is made up of four chambers
• blood vessels that carry blood away from the heart are called arteries
• from the arteries blood moves into tiny blood vessels called capillaries
• blood makes its way back to the lungs in veins once they have gone around the body