What is medulla?

  • (noun): Lower or hindmost part of the brain; continuous with spinal cord; ('bulb' is an old term for medulla oblongata).
    Example: "The medulla oblongata is the most vital part of the brain because it contains centers controlling breathing and heart functioning"
    Synonyms: medulla oblongata, bulb
    See also — Additional definitions below


Medulla refers to the middle of something and derives from the Latin word for marrow. Its anatomical uses include:

Read more about Medulla.

Some articles on medulla:

Adrenal Tumor - Tumors of The Adrenal Medulla
... The adrenal medulla is located anatomically at the center of each adrenal gland, and is composed of neuroendocrine (chromaffin) cells which produce and release epinephrine (adrenaline) into the bloodstream in ... pheochromocytoma are the two most important tumors which arise from the adrenal medulla ...
Medulla Grammatice
... Medulla Grammatice or Medulla Grammaticae ("the Marrow of Grammar") is collection of fifteenth century Latin-Middle English glossaries in the British Museum ...
... Medulla refers to the middle of something and derives from the Latin word for marrow ... Its anatomical uses include Medulla oblongata, a part of the brain stem Renal medulla, a part of the kidney Adrenal medulla, a part of the adrenal gland Medulla ossea ... Ancient Roman gold mines in León, Spain Medulla Grammatice or Medulla Grammaticae, a fifteenth-century Latin–Middle English dictionary In botany the word pith is loosely used as ...
Anterior Median Fissure Of The Medulla Oblongata - Additional Images
... Medulla oblongata and pons ... course of the arcuate fibers The formatio reticularis of the medulla oblongata, shown by a transverse section passing through the middle of the olive ... Human brain rhombencephalon, myelencephalon medulla (TA A14.1.04, GA 9.767) Dorsal Surface Posterior median sulcus · Posterolateral sulcus · Area postrema · Vagal trigone · Hypoglossal trigone · Medial eminence ...
Medulla (hair) - Importance in Forensics
... index (the fraction of the hair shaft's diameter that the medulla occupies) is very small generally less than 1/3 ... The medulla's presence in human hair and the patterns of which differ both from person to person and from strand to strand on a single person's head ... One hair may have an absent medulla while another from the same person may have a complete or fragmented medulla ...

More definitions of "medulla":

  • (noun): The inner part of an organ or structure in plant or animal.
  • (noun): A white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers.
    Synonyms: myelin, myeline