heart chambers and valves Flashcards
how many chambers are in the heart
what are they
(where are they located)
4
2 atria (superior)
2 ventricles (inferior)
the left atrium (LA) receives blood from the ___
pulmonary veins
the RA receive blood from the ___
superior and inferior vena cava
where do the atrium send signals to?
their own ventricles
ridges of the myocardium
pectinate muscles
appendages or “ears”, to increase atrial volume
auricles
wall that divides left from right atrium
interatrial septum
where does the blood from the left ventricle (LV) go?
what vessel does it pass through?
the body
aorta
which ventricle is thicker, right or left?
why is it thicker?
left
to provide more force needed to pump blood to the body
where does the blood from the RV go?
What vessel does this blood pass through?
lungs
pulmonary artery
what divides the left and right ventricles
interventricular septum
valves that are between the atria and the ventricles
atrioventricular valves
right atrioventricular valve
tricuspid valve
3 flaps
left atrioventricular valve
bicuspid valve
2 flaps
attached to papillary muscle in ventricular chamber to help anchor and close valves
chordae tendineae
