In humans, oxytocin is involved in all of the following except:
a. bonding
b. muscle contractions involved in lactation and orgasm
c. memory for safe environments
d. social recognition
C
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If most of the axons that transmit dopamine to some brain area die or become inactive, the remaining dopamine synapses become ____.
A. less responsive B. less easily stimulated C. more resistant D. more responsive
Which type of leukocyte matures in the bone marrow and produces antibodies to attack specific targets?
A. B cells B. Y cells C. T cells D. Natural killer cells
Which of the following is not true regarding infants' perception of sound patterns?
a. Babies can recognize changes in tempo. b. Babies cannot recognize rhythmic changes. c. Babies younger than six months of age do not recognize musical key transpositions. d. Babies recognize frequency shifts by the age of eight months.
Children who are beginning to produce two-word utterances tend not to include
a. nouns. c. conjunctions. b. verbs. d. adjectives.