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.
Portland is a city in Ionia County of the U.S. state of Michigan. The population was 3,883 at the 2010 census. The city is situated in the south central portion of Portland Township and is known as the City of Two Rivers since it is the confluence of the Grand River and the Looking Glass River.