Blue. Blood is only red when it is exposed to oxygen
blood in the most veins are oxygen poor blood because it gives greenish colour.
your veins or arteries
Arteries, veins, capillaries.
left atrium
All blood is the same. *within an individual body.
They are oxygen poor. Blood turns red only when in contact with oxygen.
Because muscles on the outside of the veins help the blood move. Within the veins are tiny one-way valves that normally keep blood flowing back toward the heart. When the blood arrives at the right atrium, it is pulled in by the expansion of the chamber, which lowers the pressure within the atrium.
It is a type of blood believed to have the colour of gold. it is called ichor
Hmmmm red Arteries, which carry oxegenated blood, are red because of the blood inside... So are the pulmonary and umbilical veins.
Blood will run out not squirt and will be dark der in colour because it's oxygen poor.
It comes back through the pulmonary veins. Veins always carry blood TO the heart. This is the only case where veins are high in oxygen.
Muscular contraction in the extremities moves the blood through the veins, the valves only allow blood to move toward the heart.