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Medulla   Listen
noun
Medulla  n.  
1.
Marrow; pith; hence, essence. (Obs.)
2.
(Anat.) The marrow of bones; the deep or inner portion of an organ or part; as, the medulla, or medullary substance, of the kidney; specifically, the medula oblongata.
3.
(Bot.) A soft tissue, occupying the center of the stem or branch of a plant; pith.
4.
See medulla oblongata.
Medulla oblongata. (Anat.), the posterior part of the brain connected with the spinal cord. It includes all the hindbrain except the cerebellum and pons, and from it a large part of the cranial nerves arise. It controls very largely respiration, circulation, swallowing, and other functions, and is the most vital part of the brain; called also bulb of the spinal cord. See Brain.





Collaborative International Dictionary of English 0.48


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"Medulla" Quotes from Famous Books



... central marrow (medulla centralis) is the real organ of psychic action in the narrower sense. However we conceive the intimate connection of this organ and its functions, it is certain that its characteristic actions, which we call sensation, will, and thought, are inseparably dependent on ...
— The Evolution of Man, V.2 • Ernst Haeckel
... sunshine again," said he. "It is the great restorative. Your nerves are shaken. Some little congestion of the medulla and pons. It is always instructive to reduce psychic or emotional conditions to their physical equivalents. You feel that your anchor is still firm in a bottom ...
— Round the Red Lamp - Being Facts and Fancies of Medical Life • Arthur Conan Doyle
... means of a multiplier of SCHWEIGHER with a magnetic needle, that the electro-magnetic rotation could be readily produced; at least so far as to effect small vibrations backwards and forwards. On repeating it with two needles, one of them run into an artery and another into a vein, or one into the medulla spinalis, at the neck, and another into an extremity, in a rabbit, no effect whatever took ...
— North American Medical and Surgical Journal, Vol. 2, No. 3, July, 1826 • Various


Words linked to "Medulla" :   animal tissue, medullary sheath, medulla spinalis, adrenal medulla, plant tissue, brain-stem, medullary, respiratory center, neural structure, myelin, myeline, medulla oblongata


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