10_ActiveLecturePRS - Which of the following is NOT a major...

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Which of the following is NOT a major function of skeletal muscle? 1. Maintaining body temperature 2. Lining hollow organs 3. Maintaining posture 4. Storing nutrient reserves
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How are epimysium, perimysium, and endomysium interrelated? 1. All three surround skeletal muscle fibers 2. All three contain capillaries and nerves 3. All three contain satellite cells that function in the repair of muscle tissue 4. All three unite at the ends of skeletal muscles to form tendons
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How would severing the tendon attached to a muscle affect the muscle’s ability to move a body part? 1. Uncontrolled movement would result from a severed tendon. 2. Movement would be greatly exaggerated with no tendon. 3. No movement is possible without a muscle to bone connection. 4. Limited movement would result.
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Myofibrils are organized into repeating subunits called ____? 1. T-Tubules 2. Z lines 3. Sarcomeres 4. Sarcoplasmic reticulum
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The A band is comprised of which of the following subunits? 1. I-Band, terminal cisternae, and the Z-Line 2. M-Line, H-Zone, and zone of overlap 3. Thin filaments, titin, and the Z-Line 4. Sarcoplasmic reticulum and T-Tubules
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Why does skeletal muscle appear striated when viewed through a microscope? 1. Z. Lines and myosin filaments align within the tissue. 2. Glycogen reserves are linearly arranged. 3. Capillaries regularly intersect the myofibers. 4. Actin filaments repel stain, appearing banded.
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Where would you expect the greatest concentration of Ca 2+ in resting skeletal muscle to be? 1. In T. Tubules 2. Surrounding the mitochondria 3. Within sarcomeres 4. In cisternae of the sarcoplasmic reticulum
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In what ways does the appearance of a sarcomere change during contraction of a skeletal muscle fiber? 1. Zones of overlap get larger; H. Zone gets wider; A bands shorten 2. Titin molecules are relaxed; M. Line disappears 3. Z. Lines move closer together; I bands and 4. H. Zones get smaller 5. None of these is correct
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10_ActiveLecturePRS - Which of the following is NOT a major...

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