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red blood cell
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capillary
Observe a red blood cell as it travels from the heart to the lungs and other body tissues
Why is blood red?
Watch red blood cells travel through arteries and capillaries to deliver oxygen
red blood cells iron-deficiency anemia Plasmodium vivax Fibrin in blood clotting blood smear showing sickle cell anemia sickle cell anemia
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red blood cell: Facts & Related Content

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News •

Researchers Identify New Blood Group After 50 Year Mystery • Apr. 14, 2025, 6:23 AM ET (ScienceAlert)

Facts

Also Known As red corpuscle • erythrocyte

Did You Know?

  • Human blood is about 44% red blood cells.
  • The human body can make 119 million red blood cells per second.
  • A red blood cell is 0.000007 of a meter in size.

Photos and Videos

capillary
red blood cells
iron-deficiency anemia
Plasmodium vivax
Fibrin in blood clotting
blood smear showing sickle cell anemia
sickle cell anemia
blood cells in sickle cell anemia compared with healthy red blood cells
Trypanosome with human red blood cells (highly magnified).
Blood components
Observe a red blood cell as it travels from the heart to the lungs and other body tissues
Why is blood red?
Watch red blood cells travel through arteries and capillaries to deliver oxygen
Function of red blood cells explained
Sickle cell anemia explained
See All Videos and Images →

Related Topics and References

Topics
Dig Deeper: More Articles That Discuss This Topic

Key People

Marcello Malpighi
Marcello Malpighi
Italian scientist
Antonie van Leeuwenhoek
Antonie van Leeuwenhoek
Dutch scientist
Swammerdam, Jan
Jan Swammerdam
Dutch naturalist
William Hewson
English physiologist

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