pe unit 1 aos 2

cardiorespiratory

cardiovascular system consists of

heart, blood vessels, blood

pulmonary circuit

blood flow between heart and lungs

systematic circuit

blood flow between heart and body

functions of cardiovascular system

• circulates blood

• brings o2, water and nutrients to cells

• removes co2 and other wastes from cells

• thermoregulation + hydration

• fight disease

• blood clotting

heart structure

superior vena cava - vein that brings deoxygenated blood from upper body to right atrium

inferior vena cava - vein that brings deoxygenated blood from lower body to right atrium

right atrium - recieves deoxygenated blood from veins and pushes into right ventricle

tricuspid valve - valve between right atrium and right ventricle

right ventricle - recieves deoxygenated blood from atrium and pushes into pulmonary artery

pulmonic valve - valve between right ventricle and pulmonary artery

pulmonary artery - brings deoxygenated blood from right ventricle to lungs (there’s two because they need to go to each lung)

blood gets oxygenated and loses carbon dioxide in lungs

pulmonary veins - receives oxygenated blood from lungs (there’s two because they come from each lung)

bicuspid/mitral valve -

left ventricle -

aortic valve -

aorta -

valves

prevent backflow

viscosity

low viscosity = water

high viscosity = syrup

plasma

red blood cells

white blood cells

platelets