Answer to Question 1
Answer: Chemical stimulation can be used to excite cell bodies rather than both cell bodies and axons of passage.
Answer to Question 2
Answer: Brain cells require glucose as fuel for activity. 2-DG , like glucose, is taken up into neurons, but cannot be used for energy. If a radioactive version of 2-DG is injected into an animal, radioactive 2-DG molecules will accumulate in brain as a function of the relative activity of those cells. Autoradiography will reveal the presence of radioactive molecules in the brain, with a more intense signal in regions that were more active, and a less intense signal in less active regions.
Photograph of a child with a cochlear implant. This device sends electrical impulses directly to the
Prevention of electrical hazards
Electrical charge of the inner and outer regions of nerve cells
Mechanisms of action of adrenergic agonists: (1) stimulation of the release of NE; (2) increased ...
E9-23 Prepare income statements Explain the difference in operating income
Lab: Mass Relationships in Chemical Reaction