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The average length of time required to complete a college achievement test was found to equal 75 minutes, with a standard deviation of 15 minutes. When should the test be terminated if you wish to allow sufficient time for 90% of the students to complete the test? (Assume that the time required to complete the test is normally distributed.)
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Z Disk
Delicate, membranelike structure found at each end of a sarcomere to which actin myofilaments attach.
T Tubule
T Tubules, or transverse tubules, are extensions of the cell membrane that penetrate into the center of skeletal and cardiac muscle cells, playing a crucial role in muscle contraction.
Sliding Filament Model
A theory describing the mechanism of muscle contraction, where actin and myosin filaments slide past each other to shorten the muscle fiber length.
Sarcomere
The basic unit of a muscle's cross-striated myofibril, responsible for the muscle's contractile properties.
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