BRAIN
PONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The lateral corticospinal tract is a descending pyramidal tract that crosses at the decustasio pyramidum and is used to move the proximal muscles.
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CORRECT
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SALAH
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -Most of the fibers, approximately 85%, cross the midline in the decussation of the pyramids in the brain stem and then descend through the spinal cord in the lateral corticospinal tract, while the other 15% cross within the spinal cord at the level they terminate and are carried within the medial corticospinal tract.
Detailed explanation-2: -The lateral corticospinal tract (LCST) is the largest descending motor pathway in the human body, it spans the entire length of the spinal cord, eventually supplying motor signals to all the skeletal muscles of our upper and lower limbs.
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