In its resting state, the neuron is more negative inside compared to outside. The resting membrane potential is -70 millivolts (mV). The reason for this is because of the distribution of charged ions :
The 2014 Portland, Maine, population is 66,235. There are 3,108 people per square mile (population density). The median age is 36.7. The US median is 37.2. 38.53% of people in Portland, Maine, are married. 13.81% are divorced. The average household size is 2.08 people. 27.60% of people are married, with children. 19.64% have children, but are single.
Homefacts City Report. Portland is located in Multnomah County, OR. The population is 603,650, making Portland the largest city in Multnomah County and the largest city in the state of Oregon. There are 169 public schools in Portland with an average Homefacts rating of B. The total crime rate for Portland is moderate, and there are 204 registered sex offenders residing in the city.