Da Vinci, Leonardo

Da Vinci, Leonardo: The father of anatomic art, as well as an accomplished architect, scientist, engineer, inventor, poet, sculptor, and painter. In striking contrast to the pronouncements of Galen and other anatomists, da Vinci recognized that optimal scientific knowledge of human anatomy could be gained only by dissecting the human body. He injected the blood vessels and cerebral ventricles with wax for preservation, a technique that is still used today. His drawings of the human anatomy have long been considered to be unrivaled.

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  • Dacry-

    Dacry-: Combining form used before a vowel to denote a relationship to tears. See: Dacryo-.

  • Dacryo-

    Dacryo-: A combining form denoting tears, as in dacryocyst (tear sac) and dacryocystorhinostomy (surgery to open up a tear duct). From the Greek dakry meaning “a tear.”

  • Dacryoadenitis

    Dacryoadenitis: Inflammation of a lacrimal gland (a gland that produces tears).

  • Dacryocyst

    Dacryocyst: The lacrimal sac; tear sac. The dilated (widened) upper end of the nasolacrimal duct, the passageway that allows tears to drain into the nasal cavity.

  • Dacryocystorhinostomy

    Dacryocystorhinostomy: The surgical creation of a passage between the lacrimal sac (tear sac) and the nasal cavity to permit the drainage of tears. Dacryocystorhinostomy may be done to remedy an obstructed nasolacrimal duct.

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