Calcium ions enter the axon 0 b calcium ions are

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Unformatted text preview: % H. Opening of potassium channels. 0% I. The troponin-tropomyosin complex shifts, exposing the active sites on actin. 0% J. Uptake of ATP by the myosin heads. 100% K. Attachment of actin-myosin crossbridges and swiveling of the myosin heads. Score: 0% 0.67/0.67 10. Which event, required for continued function of the neuromuscular junction, is prevented by certain pesticide and nerve gas poisons? Student Response Value A. Calcium ions enter the axon 0% B. Calcium ions are pumped back into the sarcoplasmic reticulum. 0% C. Acetylcholine is released into the synaptic cleft by exocytosis. 0% D. Acetylcholine binds to post-synaptic receptors on the sarcolemma. 0% E. Na+ moves across the sarcolemma into the muscle cell. 0% F. Breakdown of ACh by AChase. 100% G. Opening of the voltage-gated sodium channels. 0% H. Opening of potassium channels. 0% I. The troponin-tropomyosin complex shifts, exposing the active sites on actin. 0% J. Uptake of ATP by the myosin heads. 0% K. Attachment of actin-myosin crossbridges and swiveling of the myosin heads. 0% Score: 0.67/0.67 11. As soon as Ca++ ions are released into the sarcoplasm: Student Response A. Calcium ions enter the axon Value 0% Student Response Value B. Calcium ions are pumped back into the sarcoplasmic reticulum. 0% C. Acetylcholine is released into the synaptic cleft by exocytosis. 0% D. Acetylcholine binds to post-synaptic receptors on the sarcolemma. 0% E. Na+ moves across the sarcolemma into the muscle cell. 0% F. Opening of the chemically-gated sodium channels. 0% G. Opening of the voltage-gated sodium channels. 0% H. Opening of potassium channels. 0% I. Binding of calcium ions to Troponin C. 100% J. Uptake of ATP by the myosin heads. 0% K. Attachment of actin-myosin crossbridges and swiveling of the myosin heads. 0% Score: 0.66/0.66 12. Curare acts as a muscle relaxant by competing with this process: Student Response Value A. Calcium ions enter the axon 0% B. Calcium ions are pumped back into the sarcoplasmic reticulum. 0% C. Acetylcholine is released into the synaptic cleft by exocytosis. 0% D Acetylcholine binding to post-synaptic receptors on the sarcolemma. . 100% E. Na+ moves across the sarcolemma into the muscle cell. 0% F. Breakdown of ACh by AChase. 0% G. Opening of the voltage-gated sodium channels. 0% H. Opening of potassium channels. 0% I. The troponin-tropomyosin complex shifts, exposing the active sites on actin. 0% J. Uptake of ATP by the myosin heads. 0% K. Attachment of actin-myosin crossbridges and swiveling of the myosin heads. 0% Score: 0.66/0.66 13. An action potential is generated on the sarcolemma by which event of the following: Student Response Value A. Calcium ions enter the axon 0% B. Calcium ions are pumped back into the sarcoplasmic reticulum. 0% C. Acetylcholine is released into the synaptic cleft by exocytosis. 0% Student Response Value D. Acetylcholine binds to post-synaptic receptors on the sarcolemma. 0% E. Na+ moves across the sarcolemma out of the muscle cell. 0% F. Opening of the chemically-gated so...
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This note was uploaded on 01/29/2013 for the course BIOL 239 taught by Professor Swan during the Fall '12 term at New Mexico.

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