0 c acetylcholine is released into the synaptic cleft

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: . 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. 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 6. What event causes opening of the chemically-gated Na+ channels? 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. . 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. Binding of calcium ions to Troponin C. 0% J. Uptake of ATP by the myosin heads. 0% K. Attachment of actin-myosin crossbridges and swiveling of the myosin heads. 0% Score: 7. 0.67/0.67 As a direct result of Ca+2 binding to troponin: 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. 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. 100% J. Uptake of ATP by the myosin heads. 0% K. Attachment of actin-myosin crossbridges and swiveling of the myosin heads. 0% Score: 0.67/0.67 8. As soon as the active sites are exposed on actin: 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. 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. . Score: 9. 0.67/0.67 100% Which event is required for detachment of the crossbridges? 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. 0% G. Opening of the voltage-gated sodium channels. 0...
View Full Document

Ask a homework question - tutors are online