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The human heart and cardiovascular system explained
Why is blood red?
How much blood is in the human body?
electrical conduction in the heart
Hear an exposed human heart beating
heart Single photon emission computed tomography (SPECT) can be used to image blood flow to the heart (left) in order to monitor conditions such as ischemia (decreased blood flow). When information gathered via SPECT is combined with imaging information from computed tomography (CT), a fusion image (centre and right) can be obtained. reptilian heart types
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Facts You Should Know: The Human Body Quiz
3d illustration human heart. Adult Anatomy Aorta Black Blood Vessel Cardiovascular System Coronary Artery Coronary Sinus Front View Glowing Human Artery Human Heart Human Internal Organ Medical X-ray Myocardium
Human Organs
Superficial arteries and veins of face and scalp, cardiovascular system, human anatomy, (Netter replacement project - SSC)
The Human Body
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News •

Sweet taste receptors found in the heart could affect heartbeat • Feb. 17, 2025, 5:49 AM ET (News-Medical)

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heart
human heart
electrical conduction in the heart
heart
Single photon emission computed tomography (SPECT) can be used to image blood flow to the heart (left) in order to monitor conditions such as ischemia (decreased blood flow). When information gathered via SPECT is combined with imaging information from computed tomography (CT), a fusion image (centre and right) can be obtained.
reptilian heart types
cardiac muscle
heart-lung machine
hormone signaling; adipose tissue
electrocardiography
The human heart and cardiovascular system explained
Why is blood red?
How much blood is in the human body?
Hear an exposed human heart beating
Examine the ecologic importance, life cycle, and anatomical structures of the freshwater crustaceans Daphnia
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Key People

William Harvey
William Harvey
English physician
René Laënnec
French physician
Helen Brooke Taussig
American physician
Starling
Ernest Henry Starling
British physiologist
Purkinje, Jan Evangelista
Jan Evangelista Purkinje
Czech physiologist
Denton Cooley
American surgeon
Williams
Daniel Hale Williams
American physician
William Stokes
Irish physician
Christiaan Barnard
Christiaan Barnard
South African surgeon
Sir James Mackenzie
Scottish physician
Jean-Baptiste Bouillaud
French physician
Sir Dominic John Corrigan, Baronet
Irish physician
Robert Remak
German scientist
Werner Forssmann
German physician
James Bryan Herrick
American physician
Einthoven
Willem Einthoven
Dutch physiologist
André F. Cournand
American physiologist
Flint, Austin
Austin Flint
American physician
Robert Adams, drawing by an unknown artist
Robert Adams
Irish physician

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Superficial arteries and veins of face and scalp, cardiovascular system, human anatomy, (Netter replacement project - SSC)
The Human Body
Male muscle, man flexing arm, bicep curl.
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3d illustration human heart. Adult Anatomy Aorta Black Blood Vessel Cardiovascular System Coronary Artery Coronary Sinus Front View Glowing Human Artery Human Heart Human Internal Organ Medical X-ray Myocardium
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