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Circulatory System (Khan 1)

Horizontales
Which parts of the heart can be thought of as kind of like waiting rooms?
Inferior chamber in the heart
The vast majority of the O2 molecules are actually bound to ___ with only about 3% of O2 molecules floating freely in the blood.
_____ vessels serve the heart itself.
____ valve is between the LA and LV.
_____ Flow - blood flow to and from the lungs.
Verticales
O2 enters the bloodstream via ____
Location of heart, lungs and rib cage.
____ valve is between the RA and RV.
The lungs are composed of a few hundred million tiny air sacs called _____.
RBCs have no nucleus and no _____
Arteries and veins serving the lungs.
A protein that uses iron to help bind to O2 molecules.
Oxygenated blood leaves the heart through this large artery.
Superior chamber in the heart