Quiz: Chapter 101. Nerves and blood vessels that supply the muscle fibers are contained within the connective tissues of the:A: Epimysium and EndomysiumB: Endomysium onlyC: Endomysium and perimysium D: Perymsium only2. The thin filaments consist of:A: Pair of protein strands wound together to form chains of actin moleculesB: Helical array of actin moleculesC: Helical array of myosin moleculesD: Protein stands of actin and myosin molecules 3. The reason there is less precise control over leg muscles compared to the muscle in the eye is:A: Single muscle fibers are controlled by motor neuronsB: Many muscle fibers are controlled by many motor neuronsC: A single muscle fiber is controlled by single motor neuronD: Many muscle fibers are controlled by single motor neuron4. In an isotonic contraction:A: The tension in the muscle varies as it shortensB: Muscle length doesn’t change due to resistance C: The cross-bridges must produce enough tension to overcome the resistance D: Tension in the muscle decreases as the resistance increases5. Mitochondrial activities are relatively efficient, but their rate of ATP generation is limited by:A: Presence of enzymesB: Availability of carbon dioxide and waterC: Energy demands of other organelles D: Availability of oxygen 6. Extensive blood vessels, mitochondria, myoglobin are found in the greatest concentration in:A: Fast fibersB: Slow fibersC: Intermediate fibersD: Type II Fibers 7. The type of muscle cell that lacks sarcomeres and the resulting striations is:A: CardiacB: SkeletalC: SmoothD: None8. The increase of muscular tension produced by increasing the number of active motor units is called ___recruitment___. 9. In anaerobic glycolysis, glucose is broken down into pyruvic acid, which is converted into:A: GlycogenB: Lactic AcidC: Acetyl-CoAD: Citric Acid10. The type of skeletal muscle that have low fatigue resistance are:A: Fast fibersB: Slow fibersC: Intermediate fibersD: Type 1