Because of the rapid growth of basic structures, the developing fetus is sensitive to a variety of diseases, drugs, and sources of radiation, especially during which part of the pregnancy?
a. first trimester
b. second trimester
c. third trimester
d. neonatal period
ANSWER: a
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Recent research into the possibility of a neurochemical basis for anxiety disorders has generated evidence that suggests anxiety disorders may result from
a. disturbances in the neural circuits using norepinephrine. b. disturbances in the neural circuits using GABA. c. too much activity in the neural circuits using serotonin. d. too little activity in the neural circuits using serotonin.
Some brain tissue called ____primarily consists of nerve pathways, myelinated axons, and the supportive glia cells that surround them, whereas other tissue, called ____, consists of the cell bodies of neurons and glia
a. white matter; gray matter b. gray matter; white matter c. forebrain; midbrain d. midbrain; forebrain
On your way to school every morning, you observe a dog that always walks on the busy street, seemingly without fear or concern. Today, after learning about the biological bases of memory, you offer an explanation for the dog's carefree behavior:
A. the dog's amygdala is damaged and is malfunctioning B. counterconditioning is responsible for the behavior C. chemical changes have taken place in the dog's nervous system D. more neurotransmitters are released in the nervous system of the dog when it walks on the street
A new drug has been used to treat heroin addiction by blocking the craving for it. What is this new drug?
A. endorphin B. buprenorphine C. methadone D. psilocybin