MEDULLA Meaning and
Definition
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The medulla, often referred to as the medulla oblongata, is a vital part of the brainstem located at the lowest part of the brain, just above the spinal cord. It is a crucial component of the central nervous system, connecting the brain to the spinal cord. The medulla serves as a relay station, transmitting information between the brain and the rest of the body.
Functionally, the medulla is responsible for controlling various autonomic functions that are required for survival, such as regulating heart rate, blood pressure, and respiration. It also plays a critical role in coordinating reflex actions, including coughing, sneezing, and swallowing. Additionally, it acts as a center for the transmission of sensory and motor impulses between the brain and the spinal cord.
Structurally, the medulla contains various important structures, including motor and sensory tracts, cranial nerve nuclei, and respiratory centers. The pyramidal decussation, a structure located within the medulla, essentially acts as a crossing point for motor fibers originating in the cerebral cortex, allowing for the coordination of movements on opposite sides of the body.
Overall, the medulla is a fundamental part of the brain that controls essential bodily functions and serves as a communication link between the brain and the spinal cord, ultimately playing a pivotal role in maintaining homeostasis and ensuring the proper functioning of vital physiological processes.
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Any soft narrow-like structure, especially in the center of a part. Specifically, (1) bone-marrow, (2) the spinal cord, (3) the medulla oblongata.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
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The fat substance or marrow in the long bones; the pith of a plant.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
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Etymology of MEDULLA
The word "medulla" has its etymology from Latin. It stems from the Latin word "medulla", meaning "marrow". This sense of marrow refers to the soft, inner part of bones. In anatomy, "medulla" specifically refers to the innermost part or core of an organ or structure.
Similar spelling words for MEDULLA
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