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.
Predator, Prey, Predation â A predator is an animal or organism that survives by eating. other animals or organisms, the prey. Mountain lions are predators that kill and eat deer. Whales are predators that prey on plankton. many other insects, such as dragonflies, moths, or other spiders. a predator killing its prey. Top predator â An apex predator; a predator at the top of its food chain. jaguars, whales, and bears are examples of top predators. food chain where larger predators are absent.