Paper Writing Services fibers of one muscle? Answers: True False Question 6 Wch choice best describes what a fascicle is? Answers: A. Connective tissue covering

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a sarcomere? Answers: A. It is the plasma membrane of the muscle fiber B. It provides an anchor for the tck and tn filament C. It is the smallest contractile unit of a muscle fiber D. Store and release calcium ions into the cell interior for muscle contraction Question 13 Wch statement is true regarding muscle contraction? Answers:

Question 1 Fast glycolytic muscle fibers do not fatigue quickly due to their rich supply of myoglobin? Answers: True False Question 2 Anaerobic respiration produces lactic acid as a by-product but creates more ATP for muscle contraction when compared to aerobic respiration? Answers: True False Question 3 What is the neurotransmitter released from motor neurons initiating muscle contraction? Answers: A. Norepinephrine B. Dopamine C. Acetylcholine D. Acetylcholinesterase Question 4 Wch choice best describes the function T-tubules have witn muscle contraction? Answers: A. Transmit the action potential deep into the muscle cell B. Store and release calcium ions into the cell interior for muscle contraction C. Store glycogen D. Help align the tck and tn filament for contraction Question 5 A motor unit is all the nerves that innervate all of the muscle fibers of one muscle? Answers: True False Question 6 Wch choice best describes what a fascicle is? Answers: A. Connective tissue covering around the entire muscle B. Bundle of myofilaments C. Bundle of muscle myofibrils D. Bundle of muscle fibers enclosed by connective tissue Question 7 What answer is NOT true regarding muscle contraction? Answers: A. The sarcoplasmic reticulum stores the calcium ions that are released witn the muscle cell B. Tropomyosin protein covers the binding sites on the actin protein where the tck filament will bind to actin C. Acetylcholine is the neurotransmitter that binds to the sarcolemma D. ATP is needed for the tck filament to bind to the tn filament Question 8 What structure separates one fascicle from another in a muscle? Answers: A. Endomysium B. Epimysium C. Fascia D. Perimysium Question 9 Wch statement is NOT true regarding slow oxidative muscle fibers? Answers: A. They can contract slowly but for sustained period of times B. Appears wte in color witn a specimen C. They contain myoglobin D. It is fatigue resistance Question 10 Wch choice best describes the function of myoglobin? Answers: A. Assists attacng the tck filament to the tn filament B. Provides a small reserve supply of oxygen for the muscle cell C. Stores glycogen D. It is specialized protein on the tn filament Question 11 Wch statement is NOT true regarding muscle contraction? Answers: A. Actin is the protein on the tn filament that binds to the tck filament B. The tck filament is composed of the myosin protein C. Calcium ions bind to the tropomyosin protein D. The sarcoplasmic reticulum stores the calcium ions that is released witn the muscle cell during contraction Question 12 Wch statement best describes a sarcomere? Answers: A. It is the plasma membrane of the muscle fiber B. It provides an anchor for the tck and tn filament C. It is the smallest contractile unit of a muscle fiber D. Store and release calcium ions into the cell interior for muscle contraction Question 13 Wch statement is true regarding muscle contraction? Answers: A. The T-tubules store the calcium ions witn the internal part of the muscle cell B. Tropomyosin protein binds to the myosin protein C. ATP is needed to release the tck filament from the tn filament D. The power stroke occurs when the tck filament binds to the tn filament Question 14 What factor is NOT required for the process of muscle contraction to occur? Answers: A. Cross bridging of the tck and tn filament B. Acetylcholine must be bound to the sarcolemma C. Presence and production of adenosine triphosphate (ATP) D. Sodium ions to be present witn the muscle fiber’s cytoplasm Question 15 What statement is true of smooth muscle? Answers: A. It is found mainly witn internal organs such as the bladder and uterus B. Its contraction is controlled by the same mechanism as skeletal muscle C. It only contracts through conscious control D. It has a striated appearance when viewed under a microscope

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