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blood
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Function of red blood cells explained
Observe how a red blood cell travels from the heart to the lungs and other body tissues to exchange oxygen and carbon dioxide
How much blood is in the human body?
Why is blood red?
blood components diagram blood plasma red blood cell bone marrow smear showing myelocytes hemoglobin tetramer
Learn about sickle cell anemia and how a tiny microfluidic device can help analyze the behaviour of blood from sickle cell patients
For Students
blood summary
Quizzes
Superficial arteries and veins of face and scalp, cardiovascular system, human anatomy, (Netter replacement project - SSC)
The Human Body
Read Next
Diagram showing human heart
What’s the Difference Between Veins and Arteries?
Transfused Human blood in storage
The Strange, Grisly History of the First Blood Transfusion
pulmonary veins and arteries, circulation, cardiovascular system, human anatomy, (Netter replacement project - SSC)
13 Questions About How the Human Body Works Answered
Lateral view of an adult bedbug, Cimex lectularius, as it was in the process of ingesting a blood meal from the arm of a voluntary human host. Photo dated 2006.
8 Animals That Suck (Blood)
Hand washing. Healthcare worker washing hands in hospital sink under running water. contagious diseases wash hands, handwashing hygiene, virus, human health
17 Questions About Health and Wellness Answered
Discover
United States Electoral College votes by state
How Many Electoral College Votes Does Each U.S. State Have?
A Factory Interior, watercolor, pen and gray ink, graphite, and white goache on wove paper by unknown artist, c. 1871-91; in the Yale Center for British Art. Industrial Revolution England
Inventors and Inventions of the Industrial Revolution
Jackson (Wyoming, United States). Jackson Lake (also called Jackson Hole), southern end of the Teton Range (the Grand Tetons), Grand Teton National Park, Wyoming, USA
7 Wonders of America
An ancient egyptian hieroglyphic painted carving showing the falcon headed god Horus seated on a throne and holding a golden fly whisk. Before him are the Pharoah Seti and the goddess Isis. Interior wall of the temple to Osiris at Abydos, Egypt.
11 Egyptian Gods and Goddesses
American black bears (Ursus americanus), mother with cub in forest.
Why Do Some Animals Hibernate?
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
The Lost Colony of Roanoke
Aphrodite. Greek mythology. Sculpture. Aphrodite is the Greek goddess of love and beauty.
12 Greek Gods and Goddesses

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Photos and Videos

blood components diagram
blood plasma
red blood cell
bone marrow smear showing myelocytes
hemoglobin tetramer
Macrophage structure
MRSA and neutrophil
human lymphocyte
human T cell; human T lymphocyte
platelet
Function of red blood cells explained
Observe how a red blood cell travels from the heart to the lungs and other body tissues to exchange oxygen and carbon dioxide
How much blood is in the human body?
Why is blood red?
Learn about sickle cell anemia and how a tiny microfluidic device can help analyze the behaviour of blood from sickle cell patients
See All Videos and Images →

Related Topics and References

Topics

Key People

Stephen Hales
Stephen Hales
English scientist
Edwin Joseph Cohn
American biochemist
William Harvey
William Harvey
English physician
Claude Bernard, detail of a lithograph by A. Laemlein, 1858
Claude Bernard
French scientist
Marcello Malpighi
Marcello Malpighi
Italian scientist
Bernardo Alberto Houssay
Argentine physiologist
Charles Richard Drew
Charles Richard Drew
American physician
Nuttall, George Henry Falkiner
George Henry Falkiner Nuttall
British biologist
Walter Bradford Cannon
American neurologist and physiologist
Ernst Felix Hoppe-Seyler
German physician

Related Quizzes and Features

Quiz
Superficial arteries and veins of face and scalp, cardiovascular system, human anatomy, (Netter replacement project - SSC)
The Human Body
Superficial arteries and veins of face and scalp, cardiovascular system, human anatomy, (Netter replacement project - SSC)
The Human Body
List
Lateral view of an adult bedbug, Cimex lectularius, as it was in the process of ingesting a blood meal from the arm of a voluntary human host. Photo dated 2006.
8 Animals That Suck (Blood)
pulmonary veins and arteries, circulation, cardiovascular system, human anatomy, (Netter replacement project - SSC)
13 Questions About How the Human Body Works Answered
Hand washing. Healthcare worker washing hands in hospital sink under running water. contagious diseases wash hands, handwashing hygiene, virus, human health
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Demystified
Diagram showing human heart
What’s the Difference Between Veins and Arteries?