An action potential is a very rapid change in membrane potential that occurs when a nerve cell membrane is stimulated. Specifically, the membrane potential goes from the resting potential (typically -70 mV) to some positive value (typically about +30 mV) in a very short period of time (just a few milliseconds).eurons can respond to stimuli and conduct impulses because a membrane potential is established across the cell membrane. In other words, there is an unequal distribution of ions (charged atoms) on the two sides of a nerve cell membrane.
Aardvarks are small pig-like mammals that are found inhabiting a wide range of different habitats throughout Africa, south of the Sahara. They are mostly solitary and spend their days sleeping in underground burrows to protect them from the heat of the African sun, emerging in the cooler evening to search for food.
Where do aardvarks live? Aardvarks are quite versatile in their housing choices. They can be found in all regions, from dry savannas to rain forests, where there are sufficient termites for food, access to water, and sandy or clay soil. If the soil is too hard, aardvarks, despite being speedy, powerful diggers, will move to areas where the digging is easier.