What is blood?

  • (noun): The fluid (red in vertebrates) that is pumped by the heart.
    Example: "Blood carries oxygen and nutrients to the tissues and carries waste products away"; "the ancients believed that blood was the seat of the emotions"
    See also — Additional definitions below


Blood is a specialized bodily fluid in animals that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away from those same cells.

Read more about Blood.

Some articles on blood:

Panic Attack - Pathophysiology
... to a drop in carbon dioxide levels in the lungs and then in the blood ... This leads to shifts in blood pH (respiratory alkalosis or hypocapnia), which in turn can lead to many other symptoms, such as tingling or numbness ... release of adrenaline during a panic attack causes vasoconstriction resulting in slightly less blood flow to the head which causes dizziness and lightheadedness ...
Blood - Applications - In Genealogy and Family History
... The term blood is used in genealogical circles to refer to one's ancestry, origins, and ethnic background as in the word bloodline ... Other terms where blood is used in a family history sense are blue-blood, royal blood, mixed-blood and blood relative ...
Body Fluids In Art
... of the artist's head made entirely of his own blood The Home-Coming of Navel Strings, an installation by Noritoshi Hirakawa for the 2004 London Frieze Art Fair, which ... However, there have been rarer uses of blood (and perhaps feces) for quite some time ... Pete Doherty has painted with blood, while Marcel Duchamp used semen in his Paysage fautif ("Faulty Landscape") of 1946 ...
Trichinosis - Diagnosis - Laboratory Testing
... Blood tests and microscopy can be used to aid in the diagnosis of trichinosis ... Blood tests include a complete blood count for eosinophilia, creatine phosphokinase activity, and various immunoassays such as ELISA for larval antigens ...
Kanun - Development
... to be handled, which often in the past and sometimes still now lead to blood feuds that last until all the men of the two involved families are killed ... and try to get them to "pardon the blood" (Albanian Falja e Gjakut), but often the only resort is for men of age to stay in their homes, which are considered a safe refuge by the Kanuni, or flee the country ... The Albanian name for blood feud is Gjakmarrja ...

More definitions of "blood":

  • (noun): Temperament or disposition.
    Example: "A person of hot blood"
  • (verb): Smear with blood, as in a hunting initiation rite, where the face of a person is smeared with the blood of the kill.
  • (noun): People viewed as members of a group.
    Example: "We need more young blood in this organization"
  • (noun): The shedding of blood resulting in murder.
    Example: "He avenged the blood of his kinsmen"
    Synonyms: bloodshed, gore

Famous quotes containing the word blood:

    If you strike a child, take care that you strike it in anger, even at the risk of maiming it for life. A blow in cold blood neither can nor should be forgiven.
    George Bernard Shaw (1856–1950)

    One memorable addition to the old mythology is due to this era,—the Christian fable. With what pains, and tears, and blood these centuries have woven this and added it to the mythology of mankind! The new Prometheus. With what miraculous consent, and patience, and persistency has this mythus been stamped on the memory of the race! It would seem as if it were in the progress of our mythology to dethrone Jehovah, and crown Christ in his stead.
    Henry David Thoreau (1817–1862)

    On fields all drenched with blood he made his record in war, abstained from lawless violence when left on the plantation, and received his freedom in peace with moderation. But he holds in this Republic the position of an alien race among a people impatient of a rival. And in the eyes of some it seems that no valor redeems him, no social advancement nor individual development wipes off the ban which clings to him.
    Frances Ellen Watkins Harper (1825–1911)