HEART- features Flashcards
atria
two upper chambers of the heart that contract o force blood into the ventricles
ventricles
lower chambers of heart
contract to force blood out of the heart
vena cava
vein
brings deoxy blood from body into heart
pulmonary artery
large blood vessel that takes deoxy blood from right ventricle of heart to lungs
pulmonary vein
blood vessel
carries oxy blood from lungs to left atrium
atrioventricular valves
separate the atria from the ventricles
include the mitral valve as well as the tricuspid valve
septum
muscle and connective tissue
separates left and right ventricle- prevents oxy/deoxy blood mixing
semi-lunar valves
half-moon-shaped structures
located between the left ventricle and the aorta
permit blood flow into arteries from ventricles
diastole
phase where heart chambers relax and allow themselves to fill with blood
systole
phase where heart chambers contract and force blood out
tendinous chords
prevent AV valves turning inside out due to pressure
coronary arteries
wrapped around the heart to supply blood to cardiac muscle
cardiac muscle
thicker on the LHS - higher pressure needed to pump blood further
cardiac diastole
A V relax
pressure decr
SL valves close
