The simple idea
Corticospinal (pyramidal) tract: motor cortex → internal capsule → cerebral peduncle (midbrain) → pons → medullary pyramids → ~85–90% cross (pyramidal decussation) → lateral corticospinal tract → anterior horn cells.
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Part 11 · Movement, Autonomic Control and the Mind
Same concept, other depth: Clinical Reasoning →
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Corticospinal (pyramidal) tract: motor cortex → internal capsule → cerebral peduncle (midbrain) → pons → medullary pyramids → ~85–90% cross (pyramidal decussation) → lateral corticospinal tract → anterior horn cells.
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