Answer Happy

Which one of the following statements is incorrect? O A. Temporal summation occurs when a single synaptic input is activated twice in succession, with the second postsynaptic potential occurring before the first postsynaptic potential is over. O B. In the optic tectum of the hunting rattlesnake, spatial summation is used to combine inputs from visual and thermoreceptive layers in order to make a decision whether to strike at a mouse-like object. O C. A single type of neurotransmitter can have different postsynaptic actions depending on the type of receptor to which it binds. O D. Blocking voltage-gated K* channels in the presynaptic membrane of a typical chemical synapse is likely to reduce the amount of neurotransmitter released in response to a single action potential in the presynaptic axon.