Medulla (Latin for "marrow") or medullary may refer to:

Science

Medulla oblongata The medulla oblongata or simply medulla is a long stem-like structure which makes up the lower part of the brainstem. It is anterior and partially inferior to the cerebellum. It is a cone-shaped neuronal mass responsible for autonomic (involun ...

, a part of the brain stem *

Renal medulla The renal medulla (Latin: ''medulla renis'' 'marrow of the kidney') is the innermost part of the kidney. The renal medulla is split up into a number of sections, known as the renal pyramids. Blood enters into the kidney via the renal artery, which ...

, a part of the kidney *

Adrenal medulla The adrenal medulla () is the inner part of the adrenal gland. It is located at the center of the gland, being surrounded by the adrenal cortex. It is the innermost part of the adrenal gland, consisting of chromaffin cells that secrete catecho ...

, a part of the adrenal gland *

Medulla of ovary The medulla of ovary (or Zona vasculosa of Waldeyer) is a highly vascular stroma in the center of the ovary. It forms from embryonic mesenchyme and contains blood vessels, lymphatic vessels, and nerves. This stroma forms the tissue of the hilum ...

, a stroma in the center of the ovary * Medulla of the

thymus The thymus (: thymuses or thymi) is a specialized primary lymphoid organ of the immune system. Within the thymus, T cells mature. T cells are critical to the adaptive immune system, where the body adapts to specific foreign invaders. The thymus ...

, a part of the lobes of the thymus *

Medulla of lymph node A lymph node, or lymph gland, is a kidney-shaped organ of the lymphatic system and the adaptive immune system. A large number of lymph nodes are linked throughout the body by the lymphatic vessels. They are major sites of lymphocytes that includ ...

Medulla (hair) The medulla is the innermost layer of the hair shaft. This nearly invisible layer is the most soft and fragile, and serves as the pith or marrow of the hair. Some mammals don't have a medulla in their hair. The presence or absence of this layer ...

, the innermost layer of the hair shaft * Medulla, a part of the optic lobe of arthropods *

Medulla (lichenology) 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 A lichen ( , ) is a hybrid colony of algae or cyanobacteria living symbiotically among fil ...

, a layer of the internal structure of a lichen *

Pith Pith, or medulla, is a tissue in the stems of vascular plants. Pith is composed of soft, spongy parenchyma cells, which in some cases can store starch. In eudicotyledons, pith is located in the center of the stem. In monocotyledons, it ex ...

, or medulla, a tissue in the stems of vascular plants

Other uses

* ''

Medúlla ''Medúlla'' is the fifth studio album by Icelandic recording artist Björk. It was released on 30 August 2004 in the United Kingdom by One Little Independent Records and in the United States by Elektra Entertainment. After the release of her ...

'', a 2004 album by Björk *

Medulla, Florida Medulla is an unincorporated community and census-designated place (CDP) in western Polk County, Florida, United States. It is part of the Lakeland– Winter Haven Metropolitan Statistical Area. Medulla is an affluent residential communit ...

, a place in the U.S. *

Las Médulas Las Médulas () is a historic gold-mining site near the town of Ponferrada in the comarca of El Bierzo (León (province), province of León, Castile and León, Spain). It was the most important gold gold mining, mine, as well as the largest open ...

, a gold mining site in León, Spain

Science

Other uses

See also