How many organs are involved into the process of blood formation?
Correct answer: Three
Wannabe Vulcan
The kidneys produce the hormone (erythropoietin) that stimulates the production of red cells, so we can count the kidneys as either one or two more organs in the mix.
LillySparrow
More like 5! Mostly the bone marrow but that isn’t an organ per se
Artie
Hematopoiesis takes place in one organ in adults which is implied absent some statement
Lionessa
Back in the days of kings, sometimes an extra-smart peasant would start wondering why some people were royalty while most were not, or he might even have the treasonous question of why does the King get to be King, and his kid is King automatically. Some smarter royal said, "Tell him we have blue blood, and that's how we know God wants us to be King. Today, the expression, "blue bloods" is still used to describe the Old Rich.
Lionessa
Player #97184361, You would not believe how many people on the Internet think that blood is blue because of how it looks under the skin. When you draw blood from a vein, it is on its way back to the heart, depleted of oxygen, and it's color is dark red. When blood is drawn from an artery, it has just left the heart and is fully oxygenated, the blood is a bright, beautiful shade of crimson, bright red.
Player #97184361
What is generally the colour of blood.???
sujatha
ohh... poor liver