medulla

unregelmäßiger Plural

A noun referring to the inner part of an organ or structure in animals or plants, such as the medulla oblongata of the brain or the medullary sheath surrounding nerve fibers.

• 🇩🇪Substantiv, das den inneren Teil eines Organs oder einer Struktur bei Tieren oder Pflanzen bezeichnet, zum Beispiel das verlängerte Mark (Medulla oblongata) oder die Markscheide, die Nervenfasern umgibt.

1. White fatty substance around nerve fibers C1 formal scientific

   A fatty material that surrounds the core of certain nerve fibers, forming a medullary sheath that aids in the transmission of nerve impulses.

   • The medulla insulates axons, allowing faster signal transmission.
   • Damage to the medulla can disrupt nerve function.
   • Multiple sclerosis attacks the medulla of nerve fibers.

   🇩🇪Myelin

   Synonyme: medullary sheathmyelinmyelin sheath

2. Medulla oblongata (brainstem) C1 formal medical

   The lower, hindmost part of the brain, which connects to the spinal cord and controls vital autonomic functions such as breathing and heart rate.

   • The medulla oblongata regulates breathing and blood pressure.
   • An injury to the medulla can be life-threatening.
   • The medulla is essential for maintaining basic life functions.

   🇩🇪Verlängertes Mark (Hirnstamm)

   Synonyme: medulla oblongatamyelencephalon

3. Inner core of an organ or structure B2 formal scientific

   The central or deeper part of an organ or tissue, such as the inner region of a kidney or the pith of a plant stem.

   • In plants, the medulla stores nutrients and provides structural support.
   • The renal medulla is responsible for urine concentration.
   • The medulla of the adrenal gland produces stress hormones.

   🇩🇪Mark

   Synonyme: centercoremarrowpith

   Antonyme: cortex

• medullae plural form
• medullas plural form
• medullae's possessive plural form
• medullas' possessive plural form
• medulla's possessive singular form