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- Match each region of the central nervous system with some of its functions.Stellate cells initially process sensory input to the cortex, whereas pyramidal cells send fibers from the cortex to terminate on efferent motor neurons. (True or false)Areas of myelinated axons create the appearance of _______ matter, while neuron cell bodies and unmyelinated axons create the appearance of ______ matter.
- Provide a microscopic picture of a "typical neuron" that shows the soma, dendrites, axon, axon hillock, collateral axon, node of ranvier and presynaptic terminal.Describe the difference between myelinated and unmyelinated axonIn what way does the interior surface of the cell membrane of a resting (non-conducting) neuron differ from the external environment? The interior is: positively charged and contains less sodium. negatively charged and contains less sodium. negatively charged and contains less potassium positively charged and contains more sodium.
- Distinguish between saltatory nerve signal conduction in myelinated axons versus unmyelinatedVisit this site (http://openstaxcollege.org/l/neurolab)to see a virtual neurophysiology lab, and to observeelectrophysiological processes in the nervous system,where scientists directly measure the electrical signalsproduced by neurons. Often, the action potentials occur sorapidly that watching a screen to see them occur is nothelpful. A speaker is powered by the signals recorded froma neuron and it “pops” each time the neuron fires an actionpotential. These action potentials are firing so fast that itsounds like static on the radio. Electrophysiologists canrecognize the patterns within that static to understand whatis happening. Why is the leech model used for measuringthe electrical activity of neurons instead of using humans?Describe the general ways in which the nervous systemprocesses information.