Three-month-old Alex is lying in his crib. As he moves, he accidentally gets his foot in his mouth. He laughs and puts his foot in his mouth again. This activity is called
A) assimilation.
B) sensorimotor play.
C) fine motor skills.
D) symbolic play.
B) sensorimotor play. Sensorimotor play evolves mostly around the practice of sensory activity and the development of new motor actions.
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A. Broca's area B. hippocampus C. thalamus D. amygdala
Perception of pitch is primarily dependent upon the _________ a wave
a. amplitude of b. noise in c. timbre of d. frequency of
Bumps on the tongue called _____ contain numerous _____
A) mechanoreceptors; taste buds B) papillae; taste buds C) taste buds; mechanoreceptors D) taste buds; papillae
The __________ serotonin receptor subtype is classified as an ionotropic receptor.
A. 5-HT1A B. 5-HT5 C. 5-HT3 D. 5-HT9