How Do You Spell CROSSED PYRAMIDAL TRACT?

Pronunciation: [kɹˈɒst pɪɹˈamɪdə͡l tɹˈakt] (IPA)

The "crossed pyramidal tract" is a pathway in the central nervous system that controls voluntary movements. The spelling of this term can be tricky, but it helps to understand its phonetic transcription: /krɑst paɪrəmɪdl trækt/. The first sound, /k/, is followed by the "r" sound, /r/. The "a" in "pyramidal" is pronounced like the "a" in "father," while the final "l" is silent. The final two sounds of "tract," /t/ and /k/, are both unvoiced stops. Mastering the pronunciation of complex medical terminology is essential for effective communication in healthcare.

CROSSED PYRAMIDAL TRACT Meaning and Definition

1. The crossed pyramidal tract, also known as the corticospinal tract, refers to a major neural pathway in the central nervous system responsible for transmitting motor signals from the cerebral cortex to the spinal cord. It is called the crossed pyramidal tract because it originates in one cerebral hemisphere and ultimately crosses over to the opposite side of the body in the medulla oblongata.

   This tract consists of two main components: the lateral corticospinal tract and the anterior corticospinal tract. The lateral corticospinal tract is the larger of the two and it primarily controls voluntary movements of the limbs and digits. It starts in the motor cortex of the frontal lobe, descends through the internal capsule, and eventually crosses to the opposite side of the body in the medulla. It then continues down the spinal cord, synapsing with motor neurons that control muscles in the limbs and hands.

   On the other hand, the anterior corticospinal tract is a smaller pathway that does not cross over at the level of the medulla, but rather traverses alongside the ventral spinal cord. It mainly innervates the axial muscles, allowing for control of posture and trunk movements.

   Overall, the crossed pyramidal tract plays a crucial role in voluntary motor control and movement coordination, contributing to the execution of precise and skilled movements throughout the body. Dysfunction or damage to this tract can lead to motor deficits, such as weakness, spasticity, or loss of fine motor control.

2. Fasciculus cerebrospinalis lateralis.

   A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.

Common Misspellings for CROSSED PYRAMIDAL TRACT

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