tricuspid valve
The Auricle
TRUE
These chords are called the Chordea Tendinae. Their function is to stop the valves from invertung back into the atria. If they weeken and stretch they start to allow the valves to be pushed back into the atria, this is called floppy valve syndrome.
. . . flaps!
No. When the flaps of the aortic valve close, they prevent the flow of blood into the ventricle. The flaps of the atrioventricular valves close to prevent the flow of blood back into the atria.
The flaps are simply called flaps.
The Atria and Atrium
These are the atria - there are two in the heart.
The left and right atrium (or atria).
The upper chambers of the heart are called the atria (singular: atrium).
They are quite literally called flaps, and they make the plane go up, down, left and right.
the bottom/point of the heart is called the apex