Muscle spindle:
a receptor in skeletal muscle that detects changes in muscle length. The brain uses this information to determine the position of parts of the body, to regulate muscle contraction, and to facilitate movement.
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Neuroscientifically Challenged is a neuroscience learning resource. In addition to a blog that discusses science current events in a non-technical manner, you will also find a number of videos and articles that you can use to learn about basic principles of science and the brain.
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