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There may be rundreds of motor neurons control irg a muscle, each with its own
pool of muscle fibers scattered througr ut the muscle. A motor unit cors' of a s'ngle
motor neuron and all the rruscle fibers it controls. When a rnotor neuron ...
brain recruits and the size of their motor units, you can lift a fork or something
much heavier, like your biology textbook. Some muscles, especially those that
hold the body up and maintain posture, are almost always partially contracted.
Spinal cord Motor Motor - unit 1 unit 2 é I l / t . § // Synaptic terminals Motor
neuron axon Motor neuron cell body Muscle fibers Figure 49.34 Motor units in a
vertebrate skeletal muscle. Each ' <~4 muscle fiber (cell) ras a singe synapse
with one ...
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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