Anterior corticospinal tract
Anterior Corticospinal Tract
The Anterior Corticospinal Tract (pronunciation: an-teer-ee-or kor-ti-ko-spi-nal trakt) is a component of the Central Nervous System that plays a crucial role in the transmission of motor impulses from the brain to the spinal cord.
Etymology
The term "Anterior Corticospinal Tract" is derived from its anatomical position and function. "Anterior" refers to the front, "cortico" is derived from the Latin word "cortex" meaning "bark" or "rind", referring to the outer layer of the brain, and "spinal" pertains to the spinal cord. "Tract" refers to a bundle of nerve fibers with a common origin, termination, and function.
Function
The Anterior Corticospinal Tract is involved in the voluntary control of the muscles of the body, particularly those of the trunk and upper limbs. It carries motor impulses from the motor cortex of the brain to the spinal cord, which are then transmitted to the muscles via the peripheral nervous system.
Related Terms
- Motor Neuron: A type of nerve cell that is directly involved in the initiation of movement.
- Pyramidal Tract: A major pathway for motor signals in the central nervous system, of which the Anterior Corticospinal Tract is a part.
- Upper Motor Neuron: A type of motor neuron that originates in the motor cortex of the brain and terminates in the spinal cord or brainstem.
See Also
External links
- Medical encyclopedia article on Anterior corticospinal tract
- Wikipedia's article - Anterior corticospinal tract
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