A single alpha motor neuron and the muscle fibers it innervate are known as a(n)
a. motor junction
b. motor unit.
c. intrafusal unit.
d. antagonistic unit.
b
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A hypothesis is defined as a(n)
A. theory. B. empirical conclusion. C. research study. D. educated guess.
At the local aquarium, the trainers shape the dolphin's behavior so that they get rewarded each time they jump up and get closer to a target toy hanging above their tank. Training in this manner most closely resembles:
a. classical conditioning. b. operant conditioning. c. neutral conditioning d. a conditioned stimulus.
"Cephalo" and "caudal" bear the same relation as
A) near and away. B) large and small. C) inner and outer. D) head and tail.
Under which condition is recovery from posttraumatic stress disorder likely to be most complete?
a) person able to forget the incident b) another stressor distracts the victim c) person already in psychiatric treatment d) symptoms appear soon after the trauma