circulatory system Flashcards
Average heartbeat
70 beats per minute
The heart
job is to move blood through the body
Atria
upper chambers of the heart
receives blood
Ventricles
lower chambers of the heart
pump blood
Vena Cava (Superior and Inferior)
Return deoxygenated blood from body to the right atrium
Pulmonary Vein
Returns oxygenated blood from lungs to left atrium
Pulmonary Artery
Transfers deoxygenated blood from right ventricle to lungs
Aorta
Transports oxygenated blood from left ventricle to body
Coronary arteries and veins
supply oxygenated blood to the heart and return deoxygenated blood to right atrium
Valves
keep blood moving in 1 direction
AV valves
between atria and ventricles
prevent backflow of blood
Semilunar valves
exits of the ventricles
prevents blood from going back in
red blood cells
carry oxygen
white blood cells
fight infection
Blood circulation order
right atrium
right ventricle
pulmonary artery
lungs
left atrium
left ventricle
aorta
body
