Nerves · Nervous System · Hard

Nodes

Meaning: Nodes of Ranvier — gaps in the myelin sheath that speed up nerve impulse conduction.

In practice: Signals jump between nodes in saltatory conduction, greatly increasing transmission speed.

Quick check

Two questions on related nerves words.

Which word means: The nerve that descends from C3–C5 to innervate the diaphragm.

Which word means: A cord-like bundle of fibres that transmits electrical impulses between the brain, spinal cord, and body.

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