functions of the pons {Ans: increases arousal and prepares other parts of the brain to be ready to activate}The four main activating systems in the CNS are: {Ans: cholinergic, dopaminergic, noradrenergic, serotonergic}caffeine produces excitatory effects via {Ans: blockade of adenosine receptors}Which of the following is not a type of retinal neuron? {Ans: perpendicular cells}based on the case of H.M, we can conclude that the structures involved in explicit memory include the _______, the _______ , and adjacent cortex {Ans: hippocampus, amygdala}Research involving twins has helped us understand the effects of genetics, the environment, and their interaction on behavior. Which set of twins has identical genetics? {Ans: identical}Neurotransmitters are identified using 4 experimental criteria: {Ans: synthesis, release, receptor action, inactivation}______ fields locate sensory events. Receptor ______ determines sensitivity to sensory stimulation {Ans: receptive, density}The sensitization response is amplified by _______ that release serotonin onto the presynaptic membrane of the sensory neuron, changing the sensitivity of presynaptic _______ channels and increasing the influx of _____. {Ans: interneurons; potassium or K ; calcium ions or Ca2+}the _______ is responsible for species-typical movements, for survival-related actions, and for posture and walking. {Ans: brainstem}why do