When a neuron is in the resting state i.e. not conducting any impulse then, the axonal membrane is _.
Correct answer: D. Comparatively more permeable to K+ ions and nearly impermeable to Na+ ions
- A. Comparatively more permeable to Na+ ions and nearly impermeable to K+ ions
- B. Equally permeable to both Na+ and K+ ions
- C. Impermeable to both Na+ and K+ ions
- D. Comparatively more permeable to K+ ions and nearly impermeable to Na+ ions
Explanation
At rest, K+ leak channels remain open----> membrane is more permeable to K+, while Na+ channels are closed----> inside of axon is negative.
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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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