BIOL 235 Final Exam Superset Combo Questions and Answers 100% Pass

BIOL 235 Final Exam Superset Combo Questions and Answers 100% Pass How much of the total body weight of an average adult is muscle tissue? a. 60-70% b. 20-30% c. 30-40% d. 40-50% e. 50-60% - d. 40-50% The different types of muscle tissue differ from each other by a. microscopic anatomy. 2 100% Pass Guarantee Katelyn Whitman, All Rights b. location. c. type of control. d. both microscopic anatomy and location. e. All of these choices are correct. - e. All of these choices are correct. This is the property of muscle that gives it the ability to stretch without damage. a. electrical excitability b. thermogenesis c. extensibility d. contractility e. elasticity - c. extensibility This is the outermost layer of connective tissue surrounding a skeletal muscle. 3 100% Pass Guarantee Katelyn Whitman, All Rights a. tendon b. ligament c. endomysium d. epimysium e. perimysium - d. epimysium The type of tendon formed when the connective tissue elements of a skeletal muscle extend as a broad flat layer. a. endomysium b. perimysium c. deep fascia d. fascicle e. aponeurosis - e. aponeurosis In neuromuscular junctions, synaptic vesicles containing acetylcholine are found suspended in the cytosol of 4 100% Pass Guarantee Katelyn Whitman, All Rights a. synaptic end bulbs. b. axon collateral bulbs. c. tubule bulbs. d. neuromuscular bulbs. e. myelin bulbs. - a. synaptic end bulbs. Which of the following correctly lists the sequence of structures that action potentials must move through to excite skeletal muscle contraction? a. axon of neuron, sarcolemma, T tubules b. muscle fiber, axon of neuron, myofibrils c. sarcolemma, axon of neuron, T tubules d. myofibrils, myofilaments, mitochondria e. T tubules, sarcolemma, myofilament - a. axon of neuron, sarcolemma, T tubules 5 100% Pass Guarantee Katelyn Whitman, All Rights The contractile organelles of a skeletal muscle fiber are thread-like structures called a. myofibrils. b. myoglobin. c. mitochondria. d. Z discs. e. M lines. - a. myofibrils. Release of calcium from these structures triggers skeletal muscle contraction. a. myofibrils b. mitochondria c. terminal cisterns of sarcoplasmic reticulum d. T-tubules 6 100% Pass Guarantee Katelyn Whitman, All Rights e. none of the answer choices - c. terminal cisterns of sarcoplasmic reticulum Which of the following regions of a sarcomere contain thin filaments? a. I band b. A band c. H zone d. Both I band and A band. e. All of these answer choices are correct. - d. Both I band and A band. Which of the following regions of the sarcomere contain thick filaments? a. zone of overlap b. A band c. H zone d. both A band and H zone 7 100% Pass Guarantee Katelyn Whitman, All Rights e. All of these answer choices are correct - e. All of these answer choices are correct Myofibrils contain a. contractile proteins. b. regulatory proteins. c. structural proteins. d. all of these answers are correct. - d. all of these answers are correct. Which of the following functions as a motor protein in all three types of muscle tissue? a. tropomyosin b. actin c. myosin d. troponin 8 100% Pass Guarantee Katelyn Whitman, All Rights e. titin - c. myosin What regulatory proteins can be found in the thin filaments of skeletal muscle fibers? a. troponin and titin b. tropomyosin and myosin c. myosin and titin d. titin and tropomyosin e. tropomyosin and troponin - e. tropomyosin and troponin Which of the regions of a sarcomere contain titin? a. the I band only b. the A band only c. the H zone only d. the zone of overlap only 9 100% Pass Guarantee Katelyn Whitman, All Rights e. from M line to Z disc - e. from M line to Z disc Which of the following proteins is used to reinforce the sarcolemma and to help transmit the tension generated by the sarcomeres to the tendons? a. tropomyosin b. actin c. dystrophin d. troponin e. myosin - c. dystrophin During muscle contraction by the sliding fi