Crossword clues for medulla
medulla
The Collaborative International Dictionary
Medulla \Me*dul"la\, n. [L.]
Marrow; pith; hence, essence. [Obs.]
--Milton.(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.
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See medulla oblongata.
Medulla oblongata. [L., oblong medulla] (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.
Douglas Harper's Etymology Dictionary
hindmost segment of the brain, 1650s, from Latin medulla, literally "marrow," also "pith of plants," of unknown origin, perhaps related to or influenced by medius "middle" (but compare also Old Irish smiur, Welsh mer "marrow"). The word was used in the Latin senses in Middle English. Related: Medular; medullary.
Wiktionary
n. 1 The soft inner part of something, especially the pith of a fruit. 2 (context anatomy English) The inner substance of various organs and structures, especially the marrow of bones. 3 (context anatomy English) The medulla oblongata. 4 (context botany English) The internal tissue of a plant.
WordNet
n. a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers [syn: myelin, myeline]
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" [syn: medulla oblongata, bulb]
the inner part of an organ or structure in plant or animal [ant: cortex]
[also: medullae (pl)]
Gazetteer
Housing Units (2000): 2739
Land area (2000): 5.675822 sq. miles (14.700312 sq. km)
Water area (2000): 0.017590 sq. miles (0.045557 sq. km)
Total area (2000): 5.693412 sq. miles (14.745869 sq. km)
FIPS code: 43925
Located within: Florida (FL), FIPS 12
Location: 27.962551 N, 81.980790 W
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Headwords:
Medulla
Wikipedia
A medulla (; plural medullas or medullae) is the middle of something. The word came to English and ISV from Latin, where it means marrow (and came from medius, middle). Its anatomical uses include:
- Medulla oblongata, a part of the brain stem
- Medulla spinalis, an alternative name for the spinal cord
- Renal medulla, a part of the kidney
- Adrenal medulla, a part of the adrenal gland
- Medulla ossea, the marrow inside a bone
- Medulla of ovary
- Medulla of thymus
- Medulla of lymph node
- Medulla (hair)
- Medullary cavity, the area inside a bone where marrow is stored
- Medullary ray (disambiguation)
- Used in medullated, a deprecated word for myelinated neurons.
Non-medical uses of the term include:
- Medúlla, a 2004 music album by Icelandic singer Björk
- Medulla, Florida, a U.S. city
- Las Médulas, Ancient Roman gold mines in León, Spain
- Medulla Grammatice or Medulla Grammaticae, a fifteenth-century Latin–Middle English dictionary
- Medulla (lichenology), a layer of the internal structure of a lichen
- In botany the word pith is loosely used as synonymous with medulla.
Medúlla is the fifth solo album by Icelandic musician Björk, released on August 31, 2004 by One Little Indian. The title derives from the Latin word for "marrow". The album is almost entirely a cappella and constructed with human vocals. Medúlla received two Grammy Award nominations and reached number one in several record charts.
- redirect Medúlla
The medulla is the innermost layer of the hair shaft. This nearly invisible layer serves as the pith or marrow of the hair. Scientists are still uncertain about the exact role of the medulla, but they speculate that it is primarily an air space that is more prominent in in-pigmented (grey or white) hair. ref: Haircutting for Dummies J. Elaine Spear
The medulla is a horizontal layer within a lichen thallus. It is a loosely arranged layer of interlaced hyphae below the upper cortex and photobiont zone, but above the lower cortex. The medulla generally has a cottony appearance. It is the widest layer of a heteromerous lichen thallus.
Usage examples of "medulla".
The ganglia situated over the esophagus of insects correspond to the medulla oblongata in man, in which originate the spinal accessory, glosso-pharyngeal, and pneumogastric nerves.
In this regional division we include the medulla, the posterior and middle portions of which give rise to the pneumogastric nerve.
The medulla is absent in the downy hairs, but in the coarser class it is always present, especially in white hair.
By some authors this crossing of the sensory and motor filaments has been supposed to take place near the medulla oblongata.
The medulla oblongata is traversed by a longitudinal fissure, continuous with that of the spinal cord.
By some physiologists these bodies are considered as the nuclei, or vital points, of the medulla oblongata.
The functions of the medulla oblongata, which begin with the earliest manifestations of life, are of an instinctive character.
Those of the spinal cord and medulla oblongata are performed without any consciousness or sensation on the part of the subject.
In the posterior chamber of the skull is the cerebellum, anterior to, and below which, is the medulla oblongata, connecting with the spinal cord and sympathetic system.
Its cerebral area includes the posterior and inferior portions of the cerebrum, the entire cerebellum, and that part of the medulla which connects with the spinal cord, all of which sustain intimate relations to vital conditions.
We have treated the brain, not as a mass of organs radiating from the medulla oblongata as their real center, but as two cerebral masses, each of which is developed around the great ventricle.
This condition extended through both the larger and the smaller brain, cerebrum, and cerebellum, but was not so marked in the medulla, or commencing portion of the spinal cord, as in the other portions.
The uppermost connects it with the midbrain, the next with the pons, and the lowermost with the medulla oblongata.
For instance, the rate of salivary secretion is controlled by certain cells in the upper medulla and the lower pons.
It arises from the pons a little before its junction with the medulla and leads to the external rectus muscle of the eyeball.