what are pectinate muscles where are they located?
ridges of muscles located in both atria but more prominant in Left atria
The inner wall separating R and L atrium?
ridges of muscle in ventricles?
finger like muscles in ventricles attached to chordae tendineae
what structure attaches to papillary muscles in ventricles and is white in color?
what structures anchor the heart valves?
papillary muscle and chordae tendineae
wall between ventricles?
why is the Left ventricle 5x thicker then right ventricle?
because the right ventricle only has to pump blood to lungs, and the left ventricle has to push blood throughout body and so it needs to be stronger and use more force to get blood where it needs to go
purpose of valves?
to prevent back flow so blood only goes one direction
what valve seperates atrium from ventricle?
on the Right side : tricuspid AV valve
on L side : bicuspid AV valve
which valve is also called mitral valve?
bicuspid AV valve
where are aortic semilunar valve and pulmonary semilunar valve locate?
aortic semilunar leaves heart leading into aorta
pulmonary semilunar leaves heart into pulmonary trunk
front of heart vs back of heart?
anterior viewpulmonary trunk is visible
ascending aorta is visible
posterior view4 pulmonary veins attached
when blood backflows what is it called?
what happens with diameter of chambers and shape of heart when left ventricle contracts?