Neuroanatomy · Nervous System · Hard
Decussation
Meaning: The crossing over of nerve fibres from one side of the central nervous system to the other.
In practice: Most corticospinal fibres cross in the lower medulla, so a cortical lesion weakens the opposite side.
Quick check
Two questions on related neuroanatomy words.
Which word means: A seahorse-shaped brain region vital for memory formation.
Answer: Hippocampus
Which word means: The gap between nerve cells where signals are transmitted.
Answer: Synapse
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