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Medullary :: Medullary (a.) Pertaining to the medula oblongata.

Metencephalon :: Metencephalon (n.) The posterior part of the brain, including the medulla; the afterbrain. Sometimes abbreviated to meten..

Marrow :: Marrow (n.) The tissue which fills the cavities of most bones; the medulla. In the larger cavities it is commonly very fatty, but in the smaller cavities it is much less fatty, and red or reddish in color..

Medullary :: Medullary (a.) Filled with spongy pith; pithy.

Oblongata :: Oblongata (n.) The medulla oblongata.

Notochord :: Notochord (n.) An elastic cartilagelike rod which is developed beneath the medullary groove in the vertebrate embryo, and constitutes the primitive axial skeleton around which the centra of the vertebrae and the posterior part of the base of the skull are developed; the chorda dorsalis. See Illust. of Ectoderm..

Endosteum :: Endosteum (n.) The layer of vascular connective tissue lining the medullary cavities of bone.

Medulla :: Medulla (n.) 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..

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

Oblongatal :: Oblongatal (a.) Of or pertaining to the medulla oblongata; medullar.

Neurokeratin :: Neurokeratin (n.) A substance, resembling keratin, present in nerve tissue, as in the sheath of the axis cylinder of medullated nerve fibers. Like keratin it resists the action of most chemical agents, and by decomposition with sulphuric acid yields leucin and tyrosin..

Myelin :: Myelin (n.) A soft white substance constituting the medullary sheats of nerve fibers, and composed mainly of cholesterin, lecithin, cerebrin, albumin, and some fat..

Neurenteric :: Neurenteric (a.) Of or pertaining to both the neuron and the enteron; as, the neurenteric canal, which, in embroys of many vertebrates, connects the medullary tube and the primitive intestine. See Illust. of Ectoderm..

Medullin :: Medullin (n.) A variety of lignin or cellulose found in the medulla, or pith, of certain plants. Cf. Lignin, and Cellulose..

Crus :: Crus (n.) Often applied, especially in the plural, to parts which are supposed to resemble a pair of legs; as, the crura of the diaphragm, a pair of muscles attached to it; crura cerebri, two bundles of nerve fibers in the base of the brain, connecting the medulla and the forebrain..

Medullary :: Medullary (a.) Pertaining to, consisting of, or resembling, marrow or medulla..

Restiform :: Restiform (a.) Formed like a rope; -- applied especially to several ropelike bundles or masses of fibers on the dorsal side of the medulla oblongata.

Myeloidin :: Myeloidin (n.) A substance, present in the protoplasm of the retinal epithelium cells, and resembling, if not identical with, the substance (myelin) forming the medullary sheaths of nerve fibers..

Cerebellum :: Cerebellum (n.) The large lobe of the hind brain in front of and above the medulla; the little brain. It controls combined muscular action. See Brain.

Medullated :: Medullated (a.) Furnished with a medulla or marrow, or with a medullary sheath; as, a medullated nerve fiber..

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