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/mɪdˈələ/ /mɪdˈulə/ Listen

noun

Medulla n.

Marrow; pith; hence, essence. (Obs.)

(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.

(Bot.) A soft tissue, occupying the center of the stem or branch of a plant; pith.

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.

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Etymology of 'Medulla'

Collaborative International Dictionary of English 0.48

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"Medulla" Quotes from Famous Books

... moreover, Goltz's dog, in which all the brain had been removed except the stem and base, was able to bark, growl, and snarl, indicating that the primitive function of the vocal instrument can be performed by the lower centres of the brain situated in the medulla oblongata. But the animal growled and barked when the attendant, who fed it daily, approached to give it food, which was a clear indication that the bark and growl had lost both its affective and cognitive significance; it was, indeed, a purely automatic reflex action. It was dependent upon a stimulus ...

— The Brain and the Voice in Speech and Song • F. W. Mott

... shall be represented in buckskins, and holding one of the injured boots in one hand; by the other he shall have hold of my shirt-frill. Amelia shall be kneeling near him, with her little hands up; and the picture shall have a grand allegorical title, as the frontispieces have in the Medulla and ...

— Vanity Fair • William Makepeace Thackeray

... "telepathy" means. The mental process by which one "knows at a distance." The sending and receiving of waves and currents of thought and feeling. Thought vibrations, and how they are caused. The part played by the cerebrum, cerebellum, and medulla oblongata—the three brains of man. The part played by the solar plexus and other great nervous centres. How thought messages are received. How states of emotional excitement are transmitted to others. The Pineal Gland: what it is, and ...

— Clairvoyance and Occult Powers • Swami Panchadasi

... or involuntary act. The respiratory centre, consisting of an expiratory and inspiratory division, is situated in the bulb, or medulla oblongata, the portion of the brain just above the spinal cord. All the ingoing nervous impulses affect respiration through the outgoing impulses that pass along the nerves to the muscles; that is, the ingoing impulses ...

— Voice Production in Singing and Speaking - Based on Scientific Principles (Fourth Edition, Revised and Enlarged) • Wesley Mills