During the embryonic stage of prenatal development, which term refers to the layer of cells that forms the muscles, bones, blood, and circulatory system?
A. mesoderm
B. ectoderm
C. endoderm
D. placenta
Answer: A
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____ fears increase with age
a. Social b. School-related c. Nighttime d. Parental separation
A design that compares different groups of scores obtained from separate groups of participants is a ____ design
a. single-subjects b. between-subjects c. within-subject d. matched groups
A drug that blocks the effects of a neurotransmitter is a(n) ____; a drug that mimics or increases the effects is a(n) ____.
A. neuromodulator; synergist B. agonist; antagonist C. depressant; stimulant D. antagonist; agonist
In violation of the posted rules, Mahalia was standing in front of the yellow line on the public bus. When the bus made a sudden stop, Mahalia was thrown forward and hit her head on the windshield. Weeks later in the hospital, she had no memory of anything that had happened since the accident. She has most likely experienced an injury to her ________.
A. hippocampus B. cerebral cortex C. thalamus D. amygdala