In the human brain, the transmission of a stimulus along a neuron is electrical and its transmission between neurons is predominantly

An advantage of the case study method is that it

a. provides identification of clear cause-and-effect relationships. b. allows information about large numbers of people to be gathered. c. allows prediction. d. allows investigation of rare or unusual problems or events.

Ethan's blood pressure is higher than normal. This means that Ethan suffers from

A) hypertension. B) atherosclerosis. C) angina. D) arrhythmia.