The fibers which control the heart at all times in

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Unformatted text preview: d order neurons. Score: Value 100% 0% 0% 0% 0/1 5. Unmyelinated fiber, synapses, and cell bodies in the brain and spinal cord are located in: Student Response A. gray matter B. white matter C. dorsal root ganglion D. ventral root ganglion Score: 1/1 6. Which of the following tracts is responsible for conscious sensations? Value 100% 0% 0% 0% Student Response Value A. spinocerebellar tract B. Fasciculus cuneatus and fasciculus gracilis C. spinothalamic tract 0% 0% 0% D. both #2 and #3 100% Score: 0/1 7. The cell bodies of spinal sensory neurons are located in: Student Response Value A. spinal gray matter B. spinal white matter 0% 0% C. dorsal root ganglion D. ventral root ganglion 100% Score: 0% 0/1 8. An epidural injection of anesthetic would be administered: A. outside the dura mater B. between the dura mater and arachnoid C. in the subdural space Student Response Value 100% 0% 0% D. in the central canal of the spinal cord 0% Score: 0/1 9. Fibers which cross in the pyramids are concerned with: Student Response A. Motor control on the same side of the body as their origin. B. Motor control on the opposite side of the body from their origin. C. Motor control for equilibrium and balance. D. Proprioception and muscle sense. E. Both answers #3 and #4. Score: 10. 0/1 Value 0% 100% 0% 0% 0% A tract with the name vestibulospinal would be: Student Response Value A. ascending and sensory B. ascending and motor C. descending and sensory 0% 0% 0% D. descending and motor 100% 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 C. temporal summation D. spatial summation Score: Value 0% 100% 0% 0% 1/1 2. The period during which the trigger region is effectively inhibited but not prevented from generating an action potential is the: Student Response A. B. C. D. E. absolute refractory period relative refractory period period of depolarization period of hyperpolarization Both answers 1 and 3 F. Both answers 2 and 4 Score: Value 0% 0% 0% 0% 0% 100% 1/1 3. A demyelination disorder of the CNS which results in impaired and disrupted conduction along axons is: Student Response Value A. paraplegia B. quadriplegia C. multiple sclerosis 0% 0% 100% D. Paget's disease 0% Score: 1/1 4. High frequency stimuli result from: Student Response A. A stimulus which is broadly spread on the body's soma. B. A stimulus of high intensity on the body's soma. C. Many neurons functioning at the same time. D. Both #1 and #3. Score: Value 0% 100% 0% 0% 1/1 5. The relative refractory period occurs during: Student Response Value A. opening of Na+ gates + B. opening of K gates 0% 0% C. closing of K+ gates when excess K+ has left the neuron. D. opening of K+ gates when excess K+ has left the neuron. 100% Score: 0% 0/1 6. If several inputs to a reflex pathway each produce simultaneous sub-threshold depolarizations, it could result in _____ at the receptive region of the receiving neuron. Student...
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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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