structure of axon. in nervous system: Axon. The axon arises from the soma at a region called the axon hillock, or initial segment. This is the region where the plasma membrane generates nerve impulses; the axon conducts these impulses away from the soma or dendrites toward other neurons.
The type of land form that the Sierra Nevada and coastal ranges have is called a basin.
Mountain Range. Mountain ranges generally belong to the same geological structure, and consist of a series of peaks and ridges surrounded by lowlands and valleys. There are many mountain ranges in Canada, including the Rocky Mountains, the St. Elias Mountains and the Laurentian Mountains.ountain Range. Mountain ranges generally belong to the same geological structure, and consist of a series of peaks and ridges surrounded by lowlands and valleys. There are many mountain ranges in Canada, including the Rocky Mountains, the St. Elias Mountains and the Laurentian Mountains.