During motor activity, alpha-gamma coactivation provides important information regarding muscle length to the higher motor control centers
Indicate whether the statement is true or false.
TRUE
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During the rising (depolarizing) phase of a neuronal action potential,
A. PK+ becomes much greater than PNa+. B. K+ flows rapidly into the cell. C. PK+ is the same as PNa+. D. Na+ efflux (flow out of the cell) occurs. E. PNa+ becomes much greater than PK+.
Arnold enters a darkened movie theater on a sunny summer afternoon. It takes many minutes for his eyes to adapt to the darkness because
A. the rods in the eye work only in bright light, and it takes time for the cones to work in weak light. B. the iris takes time to close after being subjected to bright light. C. it takes some time for the retina to rebuild its rhodopsin stores from opsin and retinal. D. the optic nerve fatigues in bright light, and it takes time to recover.
Which of the following hormones acts as a potent anti-inflammatory agent?
What will be an ideal response?
The term ________ refers to a membrane that allows some things to pass through it, but not others.
A. specificity B. selectively permeable C. carrier-mediated D. phospholipid bilayer E. glycocalyx