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Neuroanatomy › ViewWhich of the following statements is TRUE regarding the membrane potential of a neuron?
A. At rest, sodium has the greatest influence over the membrane potential (-70 mV) due to the greater difference in ion concentration inside and outside the cell.
B. Potassium leak channels allow fir a constant efflux of potassium ions when a neuron is at rest.
C. At rest, the equilibrium potential for sodium is the most negative and has the highest permeability of all ions.
D. Chloride has the highest concentration of ions inside of a neuron when at rest.
Vision and Hearing Defects › View
What is the mechanism by which myopia develops?
A. The lens becomes more convex, focusing light behind the retina.
B. The lens becomes less convex, focusing light in front of the retina.
C. The eyeball lengthens, causing light to focus in front of the retina.
D. The eyeball shortens, causing light to focus behind the retina.