5 17 facilitation prior sub threshold depolarization

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Unformatted text preview: Value 0% 100% C. elevation D. depression 0% 0% Score: 7. Feedback 0.5/0.5 upper motor neurons Fibers in the corticospinal tract are known as: Student Response Upper motor neurons A. Value 100% B. Lower motor neurons C. Second order neurons D. Third order neurons. 0% 0% 0% Score: 8. Feedback 0.5/0.5 Gates at Nodes In myelinated peripheral nerves the voltage gates are located only at the Nodes of Ranvier. A. True Student Response Value 100% B. False 0% Score: 9. Feedback 0.5/0.5 conscious sensations Which of the following tracts is responsible for conscious sensations? Student Response A. spinocerebellar tract B. Fasciculus cuneatus and fasciculus gracilis C. spinothalamic tract Value 0% 0% 0% Feedback Student Response D. both #2 and #3 Score: 10. Value 100% Feedback 0.5/0.5 pyramidal tract fibers Fibers which cross in the pyramids are concerned with: Student Response Value A. Motor control on the same side of the body 0% as their origin. B. Motor control on the opposite side of the 100% body from their origin. C. Motor control for equilibrium and balance. 0% D. Proprioception and muscle sense. 0% Both answers #3 and #4. 0% E. Score: 11. Feedback 0/0.5 Ossification Ossification begins at about _____ in the developing embryo. A. 4 weeks B. 8 weeks C. birth Student Response Value 0% 100% 0% D. 1.5 to 2 years after birth 0% Score: 12. Feedback 0/0.5 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: 13. 0/0.5 thigh movement Value 0% 0% 0% 100% 0% 0% 0% 0% 0% 0% 0% Feedback Movement in which the thigh is raised toward the abdomen is _____ of the hip. Student Response A. flexion B. extension C. abduction D. adduction Score: 14. Value 100% Feedback 0% 0% 0% 0.5/0.5 septum pellucidum The _____ covers the entrance to the lateral ventricle. Student Response A. septum pellucidum B. fornix Value 100% 0% C. choroid plexus D. arbor vitae 0% 0% Score: 15. Feedback 0/0.5 multipolar neuron A multipolar neuron has: Student Response A. Many dendrites and axons attached to the cell body. B. Many dendrites and only one axon attached to the cell body. C. One dendrite and many axons attached to the cell body D. One process attached to the cell body. Score: 16. Value Feedback 0% 100% 0% 0% 0.5/0.5 Uptake of ATP by myosin heads. Which event is required for detachment of the crossbridges? Student Response A. Calcium ions enter the axon B. Calcium ions are pumpe...
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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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