Neuron A is excitatory to neuron B. Describe three ways that the nervous system might prevent neuron B from experiencing an action potential
What will be an ideal response?
(1) Neuron A is not stimulated; therefore, it will not generate EPSPs on neuron B.
(2) Neuron A is actively inhibited by the formation of IPSPs on its dendrites and cell body; therefore, action potentials are not generated at A's axon hillock.
(3) Neuron A sends an impulse along its axon, but another neuron inhibits the release of neurotransmitter from A's axon terminal; this is presynaptic inhibition and no EPSPs are generated on B.
You might also like to view...
In the arterial disease atherosclerosis,
A. misshapen red blood cells become lodged in capillaries. B. blood leaks from vessels. C. risk of a thrombus or embolus forming increases. D. holes slowly appear on the interior walls of arteries.
A spermatogonium enlarges to become what type of cell?
A. Spermatid B. Secondary spermatocyte C. Primary spermatocyte D. Sperm
A man recovering from testicular cancer who has lost 50% of his Leydig cells may find that he has a lower level of testosterone than before.
Answer the following statement true (T) or false (F)
Which of the following plasma constituents is not regulated by the kidneys?
a. glucose b. Na+ c. H+ d. phosphate e. water