________ A patient with multiple risk factors for cardiovascular disease may also be at risk for stroke as well as for heart attack

Which of the following should be checked with the vehicle engine turned off?

A) Warning lights B) Battery C) Windshield wiper operation D) Dash-mounted gauges

Chemotherapy can have a negative "double effect" on the brain for what reason?

A) The treatment itself penetrates the brain by destroying the brain-blood barrier. B) The treatment itself may not penetrate the brain, but it destroys the brain-blood barrier. C) The treatment itself may not penetrate the brain, but it can weaken the brain-blood barrier. D) The treatment is seldom successful because the brain-blood barrier prevents most of it from reaching the target areas.