Which of the following are true of neurotransmitters
a. they are stored in presynaptic neurons
b. each transmitter has its own shape receptor
c. they are ejected from the post-synaptic neuron and then broken down or re-uptaken
d. some of the above
e. all of the above
Answer: e. all of the above
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Which statement regarding posttraumatic stress disorder is true?
a. Victims have trouble concentrating and sleeping at night. b. The symptoms of this disorder are experienced during a stressful or traumatic event. c. Victims experience a myriad of symptoms, but emotional numbness is not one of them. d. All of these are true.
In recent decades in Western countries, there has been little change in average height, indicating that the populations of these countries have reached the upper boundary of __________ for height
a. their concordance rate b. their heritability c. their reaction range d. their polygenic inheritance