When a nerve impulse jumps from one node of Ranvier to the next in a myelinated neuron, it is called _.
Correct answer: A. Saltatory conduction
- A. Saltatory conduction
- B. Resting potential
- C. Synapses
- D. Membrane potential
Explanation
When a nerve impulse jumps from one node of Ranvier to the next in a myelinated neuron, it is called "saltatory conduction." In myelinated neurons, the myelin sheath insulates the axon and causes the impulse to "leap" or "jump" between nodes, significantly increasing the speed of signal transmission along the axon.
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About Coordination and Control
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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