Heart structure & function Flashcards
why is left ventricle thicker?
to develop greater force to push blood to rest of body
why is right ventricle thinner?
needs less force pushes blood to lungs, shorter distance
what comes in through vena cava ?
deoxygenated blood from body
what leaves through pulmonary artery?
deoxygenated blood goes to the lungs
what leaves through the aorta?
oxygenated blood goes to the rest of the body
what comes in through pulmonary vein?
oxygenated blood from the lungs
what is the function of the coronary artery?
deliver oxygenated blood to cardiac muscle
where are the semi-lunar valves?
pulmonary artery and the Aorta
what is the function of the semi-lunar valves?
prevent backflow of blood into the ventricles
where is the bicuspid valve found?
between left atria and left ventricle
where is the tricuspid valve found?
between right atria and right ventricle
what is the function of the atrioventricular valves?
prevent backflow of blood into atria
name for the chords attached to valve flaps between atria and ventricles?
Tendons
what is the function of these tendons?
prevent valves being forced inside out when ventricles contract
what is contraction?
systole
