Student response a saltatory conduction faster b

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Unformatted text preview: 0.5 15. vascular stimulation Most blood vessels are innervated only by the _____ division Feedback A. sympathetic Student Response Value 100% B. parasympathetic 0% Score: Feedback 0.5/0.5 17. spatial summation 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 Response A. temporal summation B. spatial summation C. action potential D. All of the above. E. #1 and #3 only. Score: Value Feedback 0% 100% 0% 0% 0% 0/0.5 18. 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: Feedback 0.5/0.5 19. saltatory conduction When an action potential spreads from one node of Ranvier to the next it is called _______ and it travels _________ than other forms of transmission. Student Response saltatory conduction, faster A. Value 100% B. saltatory conduction, slower C. synaptic transmission, faster D. synaptic transmission, slower 0% 0% 0% Score: 0.5/0.5 Feedback 20. spinal ganglion The cell bodies of spinal sensory neurons are located in: Student Response A. spinal gray matter B. spinal white matter C. dorsal root ganglion Value 0% 0% 100% D. ventral root ganglion 0% Score: Feedback 0.5/0.5 1. syndesmosis A syndesmosis is actually a small _____ which connects bones in a non-movable way. A. tendon B. ligament Student Response Value 0% 100% C. aponeurosis D. retinaculum 0% 0% Score: Feedback 0.5/0.5 2. 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 D. both #2 and #3 Score: Value 0% 0% 0% 100% 0.5/0.5 3. Curare Curare acts as a muscle relaxant by competing with this process: Feedback 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 binding 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% 100% 0% 0% 0% 0% 0% 0% 0% 0/0.5 4. Function of multipolar neurons Multipolar neurons function as: Student Response spinal and cranial nerve sensory neurons A. 0% B. C. D. E. 0% 0% 0% 100% Score: spinal and cranial nerve motor neurons spinal and cranial interneurons all of the above #2 and #3 only Value Feedback 0/0.5 5. elastic connective tissue The stroma of the lungs contains _____ which permits its expansion and recoil. Student Response areolar connective tissue A. 0% B. elastic connective tissue C....
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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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