How do muscle spindles protect muscles from injury during stretching?
If they are overstretched or stretched too fast, the spindles send messages to the central nervous system, and through a feedback loop, motor neurons are activated and cause muscle contraction to resist muscle stretch. This is called the stretch reflex.
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Which is correct regarding the categorization of active travel?
A. Categorization of active travel by mode or destination is NOT important. B. Prevalence of active travel is the same regardless of the destination type. C. Prevalence and mode of active travel may vary as a function of the destination category. D. Categorization of active travel is only important for mode but NOT for destination.
Essential fat accounts for about ____ percent of the total weight in men.
A. 3 B. 6 C. 9 D. 12 E. 15
Hematopoiesis occurs in the red bone marrow
Indicate whether the statement is true or false
Amotivational syndrome is more likely to develop among
a. children c. young adults b. adolescents d. middle-aged adults