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Physiology Quiz -
Skeletal Muscle Physiology - Part 5
Skeletal muscle cells are characterized by their striated appearance when visualized under the light and electron microscopes. Collectively, skeletal muscle cells make up approximately 50% of the body’s wet (i.e., soft tissue) weight. Skeletal muscle cells perform highly important functions including generating force, motion, and even heat. Test your basic knowledge of skeletal muscle physiology by taking this simple quiz.
(1)   Approximately, what is the length of the A band in a typical sarcomere?
(2)   Within the muscle sarcomere, each tropomyosin molecule spans approximately __________ globular (G) actin molecules.
(3)   A motor neuron and all of the skeletal muscle fibers it controls are collectively referred to as a:

(4)   In the human body, all skeletal muscle cells are under voluntary control.
(5)   A single skeletal muscle cell may receive synaptic input from more than one motor neuron.
(6)   A single motor neuron may innervate multiple skeletal muscle cells
(7)   Transverse tubules (t-tubules) are found in:
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Posted: Friday, September 19, 2014