1. Structures associated with muscles include all of the following except________ a. tendons b. tendon sheaths c. retinacula d. sarcomeres e. all of these are associated with muscles 2. The tissue surrounding the individual muscle fibers is called ____________ a. epimysium b. perimysium c. scarcoplasm d. endomysium e. endoneurium 3. The combination of electrical and mechanical activity is referred to as _____ a. motion intensity b. excitation/contraction coupling c. direct action d. indirect action e. none of these answers 4. Muscles that perform opposite functions are said to be ___________________ a. agonists b. antagonists c. synergists d. complementary e. supplementary 5. The ______________ is a storage structure(well) for ionic calcium utilized in muscles a. T tubules b. Sarcomere c. Terminal cisternae d. Z band e. Myoglobin 6. The following terms are all associated with individual muscle fibers except __________ a. sarcoplasm b. actin c. myosin d. transverse tubules e. all of these are associated 7. The thick myofibrils are made of _______________, and the thin fibrils are made of _______. a. myosin, actin b. actin, titin c. actin, myosin d. myosin, mitin e. titin, actin 8. The impulse travels through the muscle by way of the _______________ A. sarcomere B. T-tubule C. Synapse D. Tiny nerve fibers in the individual muscle fiber E. These all contribute to the above 9. The red pigment of skeletal muscle is due to _____. A. hemoglobin B. myoglobin C. iron residue D. melanin E. None of the above 1. Skeletal muscles are known to be ____________. A. Highly mitotic B. Multi nuclear C. Mono chromatic D. Atypical E. None of the above Use the following key to match the term to the description that follows below, terms may be used more than once or not at all. A. tropomyosin B. troponin C. ATP D. Calcium E. Acetyl Choline ____11 This is the substance that is released and activates the motor end plate. ____12 This is a strand like protein is threaded lengthwise in the muscle fibrils and prevents the fibers from sliding over one another ____13. This is a plug like protein that is found along the thin fibrils that must bond to an ion to help activate the system. ____14. This substance when released attaches to protein plugs and causes it to change shape ____15. This substance provides the energy for the sliding process of the fibrils. Choose the best answer: 16. The action potential of the motor nerve releases what ionic particle to assist in neurotransmitter release A. Calcium B. Potassium C. Barium D. Chloride E. Magnesium 17. The motor end plate consists of what kind of receptors? A. Voltage gated B. Ligand gated C. Non- gated D. Double gated E. None of these is correct 18. The Sarcomere is bounded by what structure(s) A. titin filaments B. dark bands C. H zones D. Z discs E. None of these is correct 19. What enzyme is present in the synapse to deactivate the neurotransmitter at the motor end plate A. amylase B. cholinase C. acetyl cholinesterase D. Acetylase E. None of these is correct 20. The A band is visible due to what phenomena A. overlapping of titin fibrils B. overlapping of myosin and actin C. thick strands of myosin intertwined D. thick strands of actin intertwined E. large amounts of myoglobin 21. What complex carbohydrate is found in muscle as its energy source A. glycerin B. starch C. lactose D. glycogen E. dextran 22. Repetitive stimuli to the same muscle, in excess of 40/seconds, will cause_______________ A. Staircasing B. Recruitment C. Spasm D. Tetany E. None of these phenomena are caused 23. Chemical weapons, such as Sarin or VX gas, cause death by what action on muscle. A. They block acetyl choline B. They block receptor sites from acetyl choline C. They stop motor nerves from depolarizing D. They inhibit acetyl choline esterases E. Both C & D are involved 24. The action of acetyl choline on the receptor sites of the motor endplate does ___________ A. Allows for ATP to be released B. Allows Na+ to enter at the end plate C. Allows K+ to exit at the end plate D. Hyperpolarizes the sarcolemma E. Both B & C are actions 25. When a muscle cell depolarizes, which occur? A. Na+ enters the cell and K+ exits in a 3 to 2 ratio B. Na+ enters the cell and K+ exits in a 2 to 3 ratio C. K+ enters the cell and Na + exits in a 2 to 3 ratio D. K+ and Na+ both enter the cell equally E. K+ and Na+ both exit the cell equally : 26. What is the term used to indicate that a sufficient change has occurred to induce the muscle to fire? A. action potential B. local potential C. depolarization D. threshold E. none of these is correct 27. A state of ______________ is achieved when the electrical value across the membrane is more negative than the value at rest. A. hyperpolarization B. depolarization C. threshold D. tetany E. none of these is correct 28. Where are the binding sites located that are uncovered as tropomyosin changes? A. on Actin B. on Myosin] C. on Troponin D. on Tropomyosin E. None of these is correct 29. What is the name of structures that are responsible for resetting the cell chemically following depolarization and repolarization? A. Sodium/Potassium Pumps B. Sodium Gated channel C. Potassium Gated channels D. Ligand gated Pumps E. None of these is correct 30 What is the underlying reason for the development of the phenomena known as rigor mortis? A. Absence of available ATP to release the cross bridge B. Presence of Calcium to in the T-tubules C. An electrical surge similar to an action potential from spinal decay D. Decomposition of the troponin E. None of these is correct Answer the remaining questions either A(true) or B( false) ___31. . Troponin plugs stabilize myosin heads ___32. . ATP is needed to cock the myosin heads prior to attaching to actin filaments ___33. . The choline is reabsorbed and recycled to make more neurotransmitter ___34. . Depolarization is brought on by a large in flow of Potassium ions ___35.. Calcium is important to both the nerve and muscle firing

1. Structures associated with muscles include all of the following except________ a. tendons b. tendon sheaths c. retinacula d. sarcomeres e. all of these are associated with muscles 2. The tissue surrounding the individual muscle fibers is called ____________ a. epimysium b. perimysium c. scarcoplasm d. endomysium e. endoneurium 3. The combination of electrical and mechanical activity is referred to as _____ a. motion intensity b. excitation/contraction coupling c. direct action d. indirect action e. none of these answers 4. Muscles that perform opposite functions are said to be ___________________ a. agonists b. antagonists c. synergists d. complementary e. supplementary 5. The ______________ is a storage structure(well) for ionic calcium utilized in muscles a. T tubules b. Sarcomere c. Terminal cisternae d. Z band e. Myoglobin 6. The following terms are all associated with individual muscle fibers except __________ a. sarcoplasm b. actin c. myosin d. transverse tubules e. all of these are associated 7. The thick myofibrils are made of _______________, and the thin fibrils are made of _______. a. myosin, actin b. actin, titin c. actin, myosin d. myosin, mitin e. titin, actin 8. The impulse travels through the muscle by way of the _______________ A. sarcomere B. T-tubule C. Synapse D. Tiny nerve fibers in the individual muscle fiber E. These all contribute to the above 9. The red pigment of skeletal muscle is due to _____. A. hemoglobin B. myoglobin C. iron residue D. melanin E. None of the above 1. Skeletal muscles are known to be ____________. A. Highly mitotic B. Multi nuclear C. Mono chromatic D. Atypical E. None of the above Use the following key to match the term to the description that follows below, terms may be used more than once or not at all. A. tropomyosin B. troponin C. ATP D. Calcium E. Acetyl Choline ____11 This is the substance that is released and activates the motor end plate. ____12 This is a strand like protein is threaded lengthwise in the muscle fibrils and prevents the fibers from sliding over one another ____13. This is a plug like protein that is found along the thin fibrils that must bond to an ion to help activate the system. ____14. This substance when released attaches to protein plugs and causes it to change shape ____15. This substance provides the energy for the sliding process of the fibrils. Choose the best answer: 16. The action potential of the motor nerve releases what ionic particle to assist in neurotransmitter release A. Calcium B. Potassium C. Barium D. Chloride E. Magnesium 17. The motor end plate consists of what kind of receptors? A. Voltage gated B. Ligand gated C. Non- gated D. Double gated E. None of these is correct 18. The Sarcomere is bounded by what structure(s) A. titin filaments B. dark bands C. H zones D. Z discs E. None of these is correct 19. What enzyme is present in the synapse to deactivate the neurotransmitter at the motor end plate A. amylase B. cholinase C. acetyl cholinesterase D. Acetylase E. None of these is correct 20. The A band is visible due to what phenomena A. overlapping of titin fibrils B. overlapping of myosin and actin C. thick strands of myosin intertwined D. thick strands of actin intertwined E. large amounts of myoglobin 21. What complex carbohydrate is found in muscle as its energy source A. glycerin B. starch C. lactose D. glycogen E. dextran 22. Repetitive stimuli to the same muscle, in excess of 40/seconds, will cause_______________ A. Staircasing B. Recruitment C. Spasm D. Tetany E. None of these phenomena are caused 23. Chemical weapons, such as Sarin or VX gas, cause death by what action on muscle. A. They block acetyl choline B. They block receptor sites from acetyl choline C. They stop motor nerves from depolarizing D. They inhibit acetyl choline esterases E. Both C & D are involved 24. The action of acetyl choline on the receptor sites of the motor endplate does ___________ A. Allows for ATP to be released B. Allows Na+ to enter at the end plate C. Allows K+ to exit at the end plate D. Hyperpolarizes the sarcolemma E. Both B & C are actions 25. When a muscle cell depolarizes, which occur? A. Na+ enters the cell and K+ exits in a 3 to 2 ratio B. Na+ enters the cell and K+ exits in a 2 to 3 ratio C. K+ enters the cell and Na + exits in a 2 to 3 ratio D. K+ and Na+ both enter the cell equally E. K+ and Na+ both exit the cell equally : 26. What is the term used to indicate that a sufficient change has occurred to induce the muscle to fire? A. action potential B. local potential C. depolarization D. threshold E. none of these is correct 27. A state of ______________ is achieved when the electrical value across the membrane is more negative than the value at rest. A. hyperpolarization B. depolarization C. threshold D. tetany E. none of these is correct 28. Where are the binding sites located that are uncovered as tropomyosin changes? A. on Actin B. on Myosin] C. on Troponin D. on Tropomyosin E. None of these is correct 29. What is the name of structures that are responsible for resetting the cell chemically following depolarization and repolarization? A. Sodium/Potassium Pumps B. Sodium Gated channel C. Potassium Gated channels D. Ligand gated Pumps E. None of these is correct 30 What is the underlying reason for the development of the phenomena known as rigor mortis? A. Absence of available ATP to release the cross bridge B. Presence of Calcium to in the T-tubules C. An electrical surge similar to an action potential from spinal decay D. Decomposition of the troponin E. None of these is correct Answer the remaining questions either A(true) or B( false) ___31. . Troponin plugs stabilize myosin heads ___32. . ATP is needed to cock the myosin heads prior to attaching to actin filaments ___33. . The choline is reabsorbed and recycled to make more neurotransmitter ___34. . Depolarization is brought on by a large in flow of Potassium ions ___35.. Calcium is important to both the nerve and muscle firing