Medulla in general means the inner part, and derives from the Latin word for 'marrow'. In medicine it is contrasted to the cortex. Examples of its use include:

• the medulla oblongata, a part of the brain stem
• the renal medulla, a part of the kidney
• the adrenal medulla, a part of the adrenal gland
• medulla ossea, the marrow inside the bone
• medulla spinalis, another term for spinal cord

Other 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, UNESCO World Heritage Site.
• Medula the Deviant, Marvel Comics character

Medulla