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red blood cell
Table of Contents
Introduction References & Edit History Quick Facts & Related Topics
Images & Videos
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
Quizzes
blood. Close-up of a technician drawing human blood with syringe from blood bag at a blood bank. Blood donation, Healthcare and medicine, needle
Exploring the Human Body Quiz
Read Next
pulmonary veins and arteries, circulation, cardiovascular system, human anatomy, (Netter replacement project - SSC)
13 Questions About How the Human Body Works Answered
Discover
Groups of depositors in front of the closed American Union Bank, New York City. April 26, 1932. Great Depression run on bank crowd
Causes of the Great Depression
Lusitania sinking, illustration from The War of the Nations (New York), December 31, 1919. World War I, WWI. This image is one of three on the page. (See source file for the other two.)
7 of the World’s Deadliest Shipwrecks
illustration of the walking titanosaurus, Patagotitan mayorum
Titanosaurs: 8 of the World's Biggest Dinosaurs
Shah Jahan. Taj Mahal. Mughal architecture. Emperor Shah Jahan fifth Mughal Emperor (reigned 1628-1658) India, Himachal Pradesh, Basohli or Jammu and Kashmir, Mankot, circa 1690 Drawings; Opaque watercolor, gold, and ink on paper (see notes)
6 Important Mughal Emperors
King Cobra snake in Malaysia. (reptile)
9 of the World’s Deadliest Snakes
Marriage. A couple getting married during a church wedding ceremony. (religion, ceremony, bride, groom)
The Seven Sacraments of the Roman Catholic church
July, 2006, Launch of Space Shuttle Discovery STS-121. See attached for full caption information.
Will Light-Speed Space Travel Ever Be Possible?

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Videos

Observe a red blood cell as it travels from the heart to the lungs and other body tissues
In a circuit through the cardiovascular system, red blood cells transport oxygen...
Video: Encyclopædia Britannica, Inc.
Why is blood red?
Are you “red-y” to find out?
Video: Encyclopædia Britannica, Inc.
Watch red blood cells travel through arteries and capillaries to deliver oxygen
Learn about red blood cells (erythrocytes) by watching them move through arteries...
Video: Encyclopædia Britannica, Inc.
Function of red blood cells explained
In a circuit through the cardiovascular system, red blood cells transport oxygen...
Video: Encyclopædia Britannica, Inc.
Sickle cell anemia explained
Learn about sickle cell anemia.
Video: © Open University (A Britannica Publishing Partner)
Understanding the human cardiovascular system
The vascular system is a network of arteries, veins, and capillaries that supplies...
Video: Encyclopædia Britannica, Inc.

Images

capillary
Cross section of a capillary.
Encyclopædia Britannica, Inc.
red blood cells
Human red blood cells (erythrocytes)
Manfred Kage/Peter Arnold
iron-deficiency anemia
Blood smear of a patient with iron-deficiency anemia showing abnormal red blood cells.
Roberto J. Galindo
Plasmodium vivax
Plasmodium vivax in red blood cell.
A.L. Leu
Fibrin in blood clotting
Red blood cells (erythrocytes) trapped in a mesh of fibrin threads. Fibrin, a tough,...
BSIP/age fotostock
blood smear showing sickle cell anemia
Blood smear in which the red cells show variation in size and shape typical of sickle...
sickle cell anemia
Photomicrograph of red blood cells, showing abnormal shape characteristic of sickle...
NASA
blood cells in sickle cell anemia compared with healthy red blood cells
Healthy human red blood cells (left) compared with red blood cells from a person...
(Left) Micro Discovery/Corbis; (right) NASA
Trypanosome with human red blood cells (highly magnified).
John J. Lee
Blood components
Blood is made up of multiple components, including red blood cells, white blood cells,...
Encyclopædia Britannica, Inc.
Hemoglobin tetramer
Two αβ dimers combine to form the complete hemoglobin molecule. Each heme group contains...
Encyclopædia Britannica, Inc.
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