CK-12 Circulatory System Questions #5
What do white blood cells do? What percentage of your blood is WBC?
White blood cells fight infection. White blood cells are <1% of your blood.
Why is blood considered nutritious if you ate it? What does it contain?
The blood is considered nutritious since it contains protein and iron.
What are the four components of blood?
The four components are red blood cells, white blood cells, platelets and plasma.
How much blood do you have in your body?
4.5-5.5 liters
What is hemoglobin?
Hemoglobin is the thing in red blood cell that gives their red color and helps to carry oxygen.
What would happen if you ate blood?
It would be dangerous and can give you too much iron.
What is the most abundant component of blood?
The most abundant component of blood is plasma.
What is the shape of a red blood cell? What does it do?
The red blood cell is the shape of a disc. It carries oxygen.
What do platelets do?
They help with blood clotting.
Where are red blood cells made in your body? How long does a RBC last?
They're made in the marrow of the bone. It lasts 120 days.
