Which of the following causes the hyperpolarization across neurolemma?
Correct answer: C. Late closing of K+ channels
- A. Distribution of charge
- B. Influx of Na+
- C. Late closing of K+ channels
- D. Outward diffusion of Na+
Explanation
Hyperpolarization is a change in a cell's membrane potential that makes it more negative. It is the opposite to that of a depolarization. It is mainly caused by late closing of K+ channels.
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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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