{ "nid": "101", "details": "\x3cspan class=\"title\"\x3eNerveWorks™: Vent Worm Resting\x3c/span\x3e\x3cbr/\x3e\n\x3cspan class=\"description\"\x3eThis exercise is based on a totally fictitious, but plausible scenario: You retrieve vent worms (\x3ci\x3eRiftia pachyptila\x3c/i\x3e) from deep sea hydrothermal vents to study in the laboratory. You record the resting potential of neurons from these animals, a resting potential set by permeability to a single ion. Using ion substitution techniques, you determine the permeant ion at rest. You change the concentration of the permeant ion in the bath and use this data to create a graph of log\x3csub\x3e10\x3c/sub\x3e[permeant ion]\x3csub\x3eout\x3c/sub\x3e \x3ci\x3evs\x3c/i\x3e. membrane potential and use this plot to determine the approximate internal concentration of the permeant ion.\r\n\x3c/span\x3e\x3cbr/\x3e\n\x3cbr/\x3e\n\x3cstrong\x3eKey Concepts\x3c/strong\x3e: Ions; Membrane potential; Nernst equation\x3cbr/\x3e\n\x3cstrong\x3eCourses\x3c/strong\x3e: Neurobiology\x3cbr/\x3e\n          \x3cbr/\x3e\x3ca href=\"/search_result_details/brief/101\" class=\"node_brief\"\x3eRead less\x3c/a\x3e        \x3cbr/\x3e  \x3c/span\x3e \x3c!-- description --\x3e\n" }