In what procedure for cardiovascular disease does a surgeon insert a tube into a blocked artery and inflate a tiny balloon that flattens the fatty deposits against the wall and allows blood to flow more freely?

What two chemical compounds are known to be particularly important neurotransmitters in the brain?

a. Glutamate and acetylcholine b. Gamma-aminobutyric acid and dopamine c. Norepinephrine and serotonin d. Serotonin and dopamine

Theobroma, the genus name for the cacao tree, is Latin for

A. food of the gods. B. bitter root. C. wake-up tree. D. calm river.