GYRUS PRAECENTRALIS Meaning and
Definition
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The gyrus praecentralis, also known as the precentral gyrus, is a prominent anatomical structure located in the brain's cerebral cortex. It is positioned on the superior frontal lobe of each cerebral hemisphere, and its primary function is closely associated with motor control.
Specifically, the gyrus praecentralis plays a crucial role in the execution and coordination of voluntary movement. It is considered a part of the primary motor cortex, responsible for initiating and controlling voluntary bodily movements through the contraction and relaxation of muscles. This region contains a somatotopic organization, meaning that different areas within the gyrus praecentralis correspond to different parts of the body, with adjacent areas representing adjacent body parts.
The gyrus praecentralis receives input from various sensory systems, including the somatosensory cortex, as well as higher-order cognitive areas responsible for motor planning and coordination. When a movement is intended, the gyrus praecentralis sends signals to the muscles involved, allowing for their contraction and movement.
Damage or dysfunction of the gyrus praecentralis can result in motor impairments, such as difficulty in initiating or controlling movements, muscle weakness, and coordination problems. This area is also commonly associated with disorders like stroke, cerebral palsy, and motor neuron diseases affecting the brain's motor system.
In conclusion, the gyrus praecentralis is a crucial region located within the cerebral cortex responsible for motor control. It serves as the primary motor cortex, coordinating and initiating voluntary movements, with distinct areas representing specific body parts.
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Precentral, anterior central, or ascending frontal convolution, g. centralis anterior.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for GYRUS PRAECENTRALIS
- gyruspraescentralis
- g yrus praecentralis
- gy rus praecentralis
- gyr us praecentralis
- gyru s praecentralis
- gyrus pr aecentralis
- gyrus pra ecentralis
- gyrus prae centralis
- gyrus praec entralis
- gyrus praece ntralis
- gyrus praecen tralis
- gyrus praecent ralis
- gyrus praecentr alis
- gyrus praecentra lis
- gyrus praecentral is
- gyrus praecentrali s
Etymology of GYRUS PRAECENTRALIS
The word "gyrus praecentralis" is of Latin origin. "Gyrus" means "ridge" or "convolution" in Latin, referring to the folds or ridges on the surface of the brain. "Praecentralis" is a combination of two Latin words: "prae", meaning "before" or "in front of", and "centralis", meaning "central". Therefore, "gyrus praecentralis" can be translated as the "convolution in front of the central region", specifically referring to the area in the frontal lobe of the brain known as the precentral gyrus.
