Norepinephrine acts on the heart by

In which way does nicotine cause addiction? by stimulating the brain’s pleasure center by increasing blood-sugar levels by decreasing dopamine levels by reducing depression and anxiety

During polarization, potassium has a blank charge, sodium has a blank ch arge ,and calcium has a b l ank. charge

Which is not a physical sign of stress? a )pupils dilate b) breathing becomes faster and deeper c) kidneys and liver constrict d) spending money