Which of the following is not correct about myelin sheath?
Correct answer: C. Conduct impulses
- A. Composed of specialized lipids
- B. Responsible for saltatory conduction
- C. Conduct impulses
- D. Absent on nodes of Ranvier
Explanation
The myelin sheath does not conduct impulses. It insulates the axon, speeding conduction through saltatory conduction. at nodes of Ranvier, but impulses themselves travel 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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