| 释义 |
medullaenUK
me·dul·la M0195800 (mĭ-dŭl′ə)n. pl. me·dul·las or me·dul·lae (-dŭl′ē) 1. The inner core of certain organs or body structures, such as the marrow of bone.2. The medulla oblongata.3. See myelin.4. Botany a. The pith in the stems or roots of certain plants.b. The central portion of a thallus in certain lichens and red or brown algae.
[Middle English, from Latin, perhaps alteration (influenced by medius, middle) of *merulla.]
me·dul′lar, med′ul·lar′y (mĕd′l-ĕr′ē, mə-dŭl′ə-rē) adj.medulla (mɪˈdʌlə) n, pl -las or -lae (-liː) 1. (Anatomy) anatomy a. the innermost part of an organ or structureb. short for medulla oblongata2. (Botany) botany another name for pith4[C17: from Latin: marrow, pith, probably from medius middle] meˈdullary, meˈdullar adjme•dul•la (məˈdʌl ə)
n., pl. -dul•las, -dul•lae (-ˈdʌl i) 1. a. the marrow of the bones. b. the soft marrowlike center of an organ, as the kidney or adrenal gland. c. medulla oblongata. 2. the pith of plants. [1635–45; < Latin: marrow, pith] med•ul•lar•y (ˈmɛd lˌɛr i, ˈmɛdʒ əˌlɛr i, məˈdʌl ə ri) adj. me·dul·la (mĭ-dŭl′ə, mĭ-do͞o′lə)1. See medulla oblongata.2. The central core of an anatomical structure, such as the adrenal gland or the kidney.medullaThe inner part of some organs, including the kidneys; a name for bone marrow.Thesaurus| Noun | 1. |  medulla - a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibersmyelin, myelinemedullary sheath, myelin sheath - a layer of myelin encasing (and insulating) the axons of medullated nerve fibersfat - a soft greasy substance occurring in organic tissue and consisting of a mixture of lipids (mostly triglycerides); "pizza has too much fat" | | 2. |  medulla - lower or hindmost part of the brain; continuous with spinal cord; (`bulb' is an old term for medulla oblongata); "the medulla oblongata is the most vital part of the brain because it contains centers controlling breathing and heart functioning"medulla oblongata, bulbneural structure - a structure that is part of the nervous systembrain stem, brainstem, brain-stem - the part of the brain continuous with the spinal cord and comprising the medulla oblongata and pons and midbrain and parts of the hypothalamusrespiratory center - the center in the medulla oblongata and pons that integrates sensory information about the level of oxygen and carbon dioxide in the blood and determines the signals to be sent to the respiratory muscles | | 3. | medulla - the inner part of an organ or structure in plant or animalanimal tissue - the tissue in the bodies of animalsadrenal medulla - the medulla of the adrenal gland; secretes epinephrineplant tissue - the tissue of a plantcortex - the tissue forming the outer layer of an organ or structure in plant or animal |
TranslationsmedullaenUK
medulla: see brain stembrain stem,
lower part of the brain, adjoining and structurally continuous with the spinal cord. The upper segment of the human brain stem, the pons, contains nerve fibers that connect the two halves of the cerebellum.
..... Click the link for more information. .medulla[mə′dəl·ə] (anatomy) The central part of certain organs and structures such as the adrenal glands and hair. Marrow, such as of bone or the spinal cord. (botany) Pith. The central spongy portion of some fungi. (neuroscience) medulla oblongata medulla1. Anatomy the innermost part of an organ or structure 2. Botany another name for pithmedullaenUK
medulla [mĕ-dul´ah] (L.) 1. the inmost part of a structure or organ.2. medulla oblongata.3. marrow. adj., adj med´ullary.adrenal medulla the inner portion of the adrenal gland, where epinephrine and norepinephrine are produced.medulla of bone marrow" >bone marrow.medulla oblonga´ta that part of the hindbrain continuous with the pons above and the spinal cord below; it houses nerve centers for both motor and sensory nerves, where such functions as breathing and the beating of the heart are controlled. See also brain.medulla os´sium marrow" >bone marrow.renal medulla the inner part of the substance of the kidney, composed chiefly of tubules" >collecting tubules, and organized into a group of structures called the pyramids" >renal pyramids.medulla spina´lis (medulla spina´lis) spinal cord.medulla of thymus the central portion of each lobule of the thymus; it contains many more reticular cells and far fewer lymphocytes than does the surrounding cortex.me·dul·la, pl. me·dul·lae (me-dūl'ă, me-dūl'ē), [TA] Any soft marrowlike structure, especially in the center of a part.
See also: medulla oblongata. Synonym(s): substantia medullaris (1) [L. marrow, fr. medius, middle] medulla (mĭ-dŭl′ə)n. pl. me·dullas or me·dullae (-dŭl′ē) 1. The inner core of certain organs or body structures, such as the marrow of bone.2. The medulla oblongata.3. See myelin.4. Botany a. The pith in the stems or roots of certain plants.b. The central portion of a thallus in certain lichens and red or brown algae.
me·dul′lar, med′ul·lar′y (mĕd′l-ĕr′ē, mə-dŭl′ə-rē) adj.medulla (1) Bone marrow.
(2) Medulla oblongata [NA6].
(3) Medulla of… (e.g., ovary, thymus, lymph node).me·dul·la, pl. medullae (me-dŭl'ă, -ē) [TA] Any soft marrowlike structure, especially in the center of a part.
See also: medulla oblongata
Synonym(s): substantia medullaris (1) . medulla (me-dul'a, dul') plural.medullae [L. medulla, marrow, pith] 1. Marrow (1).2. In anatomy, the innermost or central portion of an organ in contrast to the cortex.3. The caudal segment of the hindbrain. Synonym: medulla oblongata; bulb (2)4. The medulla ossium. medullary (med'ul-er?e, mej?), adjective ADRENAL MEDULLAadrenal medullaThe central tissue of the adrenal gland. It is filled with pheochromocytes, which are derived from the neural crest and resemble postsynaptic sympathetic ganglion cells. In response to stimulation by presynaptic sympathetic axons, the pheochromocytes secrete epinephrine and norepinephrine into the bloodstream. See: illustration See: adrenal glandmedulla of hairThe central axis of a hair.medulla of kidneys See: pyramid, renalmedulla nephrica See: pyramid, renalmedulla oblongataMedulla (3).medulla ossiumMarrow (1).medulla of ovaryThe central portion of the ovary, composed of loose connective tissue, blood vessels, lymphatics, and nerves.medulla spinalisThe spinal cord.medulla 1. The inner part of an organ, especially of the kidney, the adrenal and the shaft of long bones. Compare CORTEX. 2. The MYELIN layer of nerve fibres. See also MEDULLA OBLONGATA. medulla - the central part of an animal organ, such as the brain, adrenal gland, or kidney
- see PITH.
me·dul·la, pl. medullae (me-dŭl'ă, -ē) [TA] Any soft marrowlike structure, especially in the center of a part.
Synonym(s): substantia medullaris (1) . medullaenUK
Related to medulla: adrenal medullaSynonyms for medullanoun a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibersSynonymsRelated Words- medullary sheath
- myelin sheath
- fat
noun lower or hindmost part of the brainSynonymsRelated Words- neural structure
- brain stem
- brainstem
- brain-stem
- respiratory center
noun the inner part of an organ or structure in plant or animalRelated Words- animal tissue
- adrenal medulla
- plant tissue
Antonyms |