J uptake of atp by the myosin heads k attachment of

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Unformatted text preview: receptors. What event causes opening of the chemically-gated Na+ channels? Student Response A. Calcium ions enter the axon B. Calcium ions are pumped back into the sarcoplasmic reticulum. C. Acetylcholine is released into the synaptic cleft by exocytosis. D. Acetylcholine binds to post-synaptic receptors on the sarcolemma. E. Na+ moves across the sarcolemma into the muscle cell. F. Breakdown of ACh by AChase. G. Opening of the voltage-gated sodium channels. H. Opening of potassium channels. I. Binding of calcium ions to Troponin C. J. Uptake of ATP by the myosin heads. K. Attachment of actin-myosin crossbridges and swiveling of the myosin heads. Score: 0.5/0.5 Value 0% 0% 0% 100% 0% 0% 0% 0% 0% 0% 0% Feedback 14. Shifting of the troponin-tropomyosin complex. As a direct result of Ca+2 binding to troponin: Student Response A. Calcium ions enter the axon B. Calcium ions are pumped back into the sarcoplasmic reticulum. C. Acetylcholine is released into the synaptic cleft by exocytosis. D. Acetylcholine binds to post-synaptic receptors on the sarcolemma. E. Na+ moves across the sarcolemma into the muscle cell. F. Breakdown of ACh by AChase. G. Opening of the voltage-gated sodium channels. H. Opening of potassium channels. I. The troponin-tropomyosin complex shifts, exposing the active sites on actin. J. Uptake of ATP by the myosin heads. K. Attachment of actin-myosin crossbridges and swiveling of the myosin heads. Score: Value Feedback 0% 0% 0% 0% 0% 0% 0% 0% 100% 0% 0% 0.5/0.5 15. post-tetanic potentiation Repeated use of a particular neural pathway, such as in a rote task, will result in a temporary facilitation of the pathway called: Student Response A. saltatory conduction B. post-tetanic potentiation 0% 100% C. temporal summation D. spatial summation 0% 0% Score: Value Feedback 0.5/0.5 16. Resting membrane potential Once an action potential is generated, another cannot be generated until the ion gates return to the following configuration: Student Response Value Na+ activation gate closed, Na+ inactivation gate 100% A. open, K+ gate closed. B. Na+ activation gate closed, Na+ inactivation gate 0% Feedback Student Response Value closed, K+ gate closed. C. Na+ activation gate open, Na+ inactivation gate 0% open, K+ gate closed. D. Na+ activation gate closed, Na+ inactivation gate 0% closed, K+ gate open. Score: Feedback 0.5/0.5 17. Wernicke's area The area said to represent intelligence and an interpretive area for language is the: Student Response A. Broca's area B. pre-frontal lobes C. thalamus D. Wernicke's area Score: Value 0% 0% 0% 100% Feedback 0.5/0.5 18. contraction trigger The trigger which causes vesicles of acetylcholine to move to the axon membrane and release ACh is: Student Response Value A. AChase +2 B. Ca 0% 100% C. Na+ D. K+ Feedback 0% 0% Score: 0.5/0.5 19. central sulcus The _____ separates the mainly motor from the mainly sensory portions of the cerebrum. Student Response A. longitudinal sulcus B. transverse sulcus C. central sulcus Value 0% 0%...
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