When a skeletal muscle is contracting, another skeletal muscle is relaxing. This illustrates the concept of___
a. reciprocal muscle
b. antagonistic motor neurons
c. antagonistic muscles
d. reciprocal innervation
C
Psychology
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Cognitive development refers to lifelong changes in our
a) personalities. b) moral reasoning. c) thought processes. d) social interactions.
Psychology
Marcy is trying to define "anxiety" in such a way that it specifies how it is to be observed, measured, and empirically tested. She is attempting to find an appropriate:
a. hypothesis. b. corollary. c. theoretical definition. d. operational definition.
Psychology