Body Transport System - Science Learning 10

What are red blood cells made up of?

Answer: Red blood cells are made up of protein combined with iron.

How much is life of red blood cell?

Answer: Due to the absence of nucleus, red blood cells have a short life of about 100 days.

Where are dead red blood cells broken?

Answer: Dead red blood cells are broken down in the liver and sent to the spleen. Moreover, approximately 200 million red blood cells die everyday and are replaced by new ones.

Where are red blood cells made?

Answer: When old ones die, new red blood cells are produced in the bone marrow, which fills the center of the large bones like shin bone.

How does red blood cells pass through capillaries?

Answer: The characteristic that allows the red blood cells to pass through the capillaries is their elasticity. Red blood cells are very elastic that they can even cross the lumen of a capillary.