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.
The area's population is estimated at 2,348,247 in 2014. The Oregon portion of the metropolitan area is the state's largest urban center, while the Washington portion of the metropolitan area is the state's third largest urban center after Seattle (the Seattle Urban Area includes Tacoma and Everett) and Spokane.he PortlandâVancouverâHillsboro Metropolitan Statistical Area (MSA), the 23rd largest in the United States, has a population of 2,226,009 (2010 Census).