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capillary
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capillary lung capillary gas exchange in the lung circulatory system structures of the small intestine
Watch red blood cells travel through arteries and capillaries to deliver oxygen
Function of red blood cells explained
Understanding the human cardiovascular system
Quizzes
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Young boys working in a thread spinning mill in Macon, Georgia, 1909. Boys are so small they have to climb onto the spinning frame to reach and fix broken threads and put back empty bobbins. Child labor. Industrial revolution
The Rise of the Machines: Pros and Cons of the Industrial Revolution
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The 10 Greatest Basketball Players of All Time
Attack on Pearl Harbor. December 7, 1941. Pearl Harbor infographic. World War II. Hawaii. United States. Japan. SPOTLIGHT VERSION
Attack on Pearl Harbor Timeline
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Nikola Tesla's Weird Obsession with Pigeons
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The Lost Colony of Roanoke, North Carolina, where 115 people mysteriously disappeared c. 1590. John White discovers the word Croatoan carved onto a tree upon his return to the deserted Roanoke Colony in 1590
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Vietnam War. U.S. President Lyndon B. Johnson awards the Distinguished Service Cross to First Lieutenant Marty A. Hammer, during a visit to military personnel, Cam Ranh Bay, South Vietnam, October 26, 1966. President Johnson
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Photos and Videos

capillary
lung capillary
gas exchange in the lung
circulatory system
structures of the small intestine
Watch red blood cells travel through arteries and capillaries to deliver oxygen
Function of red blood cells explained
Understanding the human cardiovascular system
See All Videos and Images →

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Key People

Marcello Malpighi
Marcello Malpighi
Italian scientist
Krogh
August Krogh
Danish physiologist

Related Quizzes and Features

Quiz
Male muscle, man flexing arm, bicep curl.
Facts You Should Know: The Human Body Quiz
List
pulmonary veins and arteries, circulation, cardiovascular system, human anatomy, (Netter replacement project - SSC)
13 Questions About How the Human Body Works Answered