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beta-blocker

(Encyclopedia)beta-blocker or beta-adrenergic blocking agent bāˈtə ădˌrənûrˈjĭk [key], drug that reduces the symptoms connected with hypertension, cardiac arrhythmias, angina pectoris, migraine headaches, ...

ventricular assist device

(Encyclopedia)ventricular assist device: see under heart, artificial. ...

Richards, Dickinson Woodruff, Jr.

(Encyclopedia)Richards, Dickinson Woodruff, Jr., 1895–1973, American physician and physiologist, b. Orange, N.J., grad. Yale, 1917, M.D. Columbia, 1923. He joined the staff of the College of Physicians and Surgeo...

calcium-channel blocker

(Encyclopedia)calcium-channel blocker, any of a class of drugs used in treating hypertension, angina pectoris, and certain arrhythmias. They prevent the calcium ions needed for muscle contraction from entering the ...

Dupuytren, Guillaume, Baron

(Encyclopedia)Dupuytren, Guillaume, Baron gēyōmˈ bärôNˈ düpüēträNˈ [key], 1777–1835, French surgeon. As professor at the Hôtel Dieu, Paris, from 1812, he was noted as diagnostician, lecturer, and surg...

injection

(Encyclopedia)injection, introduction of a fluid into the body, usually by means of a needle and syringe. The material injected may be a test substance (as in determining allergic sensitivity or immunity to a disea...

cytology

(Encyclopedia)cytology sītŏlˈəjē [key], in biology, the study of the structure of all normal and abnormal components of cells and the changes, movements, and transformations of such components. The discipline ...

thorax

(Encyclopedia)thorax, body division found in certain animals. In humans and other mammals it lies between the neck and abdomen and is also called the chest. The skeletal frame of the thorax is formed by the sternum...

Louis, Séraphine

(Encyclopedia)Louis, Séraphine sāräfēnˈ lwē [key], 1894–1934, French neoprimitive painter. Louis was a shepherdess and kitchen helper who taught herself to paint. Her powerful floral paintings are fantasies...

Kölliker, Albert von

(Encyclopedia)Kölliker, Albert von älˈbĕrt fən köˈlĭkər [key], 1817–1905, Swiss physiologist and histologist. He was professor of physiology and of microscopic and comparative anatomy at Würzburg from 1...