Sodium pump the sarcolemma is polarized because more

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Unformatted text preview: n the sarcolemma, depolarization at the neuromuscular junction must activate: Student Response A. chemically-gated ion channels B. voltage-gated ion channels Value 0% 100% C. the T-tubules D. the sarcoplasmic reticulum 0% 0% Score: Feedback 0.5/0.5 12. Function of multipolar neurons Multipolar neurons function as: Student Response A. spinal and cranial nerve sensory neurons B. spinal and cranial nerve motor neurons C. spinal and cranial interneurons D. all of the above E. #2 and #3 only Score: Value Feedback 0% 0% 0% 0% 100% 0.5/0.5 13. osteoporosis Insufficient _____ is associated with osteoporosis. Student Response calcitonin Vitamin D3 growth hormone estrogen weight bearing exersize All of the above G. Answers 2, 4 and 5 only. A. B. C. D. E. F. Score: 0.5/0.5 Value 0% 100% 0% 100% 0% 0% 100% Feedback 14. meissner's corp which of the following is responsible for crude (non-descriminative) touch? Student Response A. Pacinian corpuscle B. Meissner's corpuscle 0% 100% C. histiocyte D. Langihans cell 0% 0% Score: Value Feedback 0.5/0.5 16. anterior external knee Match the parts with the correct letters. medial collateral ligament H tibial tuberosity D medial retinaculum B lateral collateral ligament G lateral retinaculum F tendon of rectus femoris A patella E patellar ligament C Statement medial collateral ligament tibial tuberosity medial retinaculum lateral collateral ligament lateral retinaculum tendon of rectus femoris patella patellar ligament Score: 0.0625/0.5 Response G H D B E Value 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 12.5% 0.0% 17. Binding of the ACh to the post-synaptic 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: Value Feedback 0% 0% 0% 100% 0% 0% 0% 0% 0% 0% 0% 0.5/0.5 18. 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. Sc...
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