A scan shows that a particular substance has spread throughout the body via the bloodstream but has not entered the brain. This finding demonstrates the existence of
a. the blood-brain barrier.
b. blood efficacy.
c. medicine effects.
d. the lipid bilayer.
e. the doctrine of specific nerve energies.
Answer: a. the blood-brain barrier.
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Which statement is true regarding changes in the rate of teenage pregnancy?
A. Teenage pregnancies have decreased with increased sex education, especially abstinence programs taught in the school system. B. The number of teenage pregnancies has remained unchanged over the past 5 years. C. The number of teenage pregnancies has decreased significantly over the past two decades. D. The number of teenage pregnancies has increased by 25 percent over the past two decades.
When an individual who has previously taken Antabuse drinks alcohol, he or she will probably
A. become very ill. B. have a convulsion. C. develop a skin rash. D. become feverish.
Research shows that __________ heighten(s) the chances of reporting false items consistent with the fuzzy meaning of an experience
A) autobiographical narratives B) theory of mind C) gists D) infantile amnesia
Candace and Christina sit side by side playing with their dolls. They do not talk or try to influence each other. They are engaging in __________ play
A) nonsocial B) parallel C) associative D) cooperative