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The Role of Calcium and Regulatory Proteins A skeletal muscle fiber contracts
only when stirnu'ated by a motor neuron. Wher the muscle fiber is at rest, the
myosin-binding sites on the thin fi amerit are blocked by the regulatory protein ...
When the muscle fiber produces an action potential, however, the actiori potential
opens Ca2+ charinels 'n the SR, allowing Ca2+ to eriter tre ... Figure 49.33, ori
the next page, reviews the steps in the contraction of a skeletal muscle fiber.
In a vertebrate skeletal muscle, each muscle fiber is irnervated by only one rnotor
neuron, but each branched rnotor neuron may synapse witr rrany musce fibers (
Figure 49.34). There may be rundreds of motor neurons control irg a muscle, ...
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LibraryThing ReviewUser Review - kaionvin - LibraryThing
I wasn't going to review Biology by Neil A. Campbell, because well... 1. It's ubiquitous. 2. I studied from the sixth edition in high school for Biology AP and the eighth edition for first-year ... Read full review
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This is a fabulous book. It also came with access to a free digital copy of the book, which was very handy. Read full review