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.
There are two major ranges of mountains in California: The Sierra Nevada and the Coast Ranges. The Coast Ranges of California average less than 4,000 feet in height.They follow an 800-mile course which begins in the northwest corner of Del Norte County and continues south to the Mexican border.he Mount Shasta Volcano is situated at the northern extremity of the Sierra Nevada. In his book the mountains of California, the naturalist John Muir has written extensively on this impressive mountain. Indeed, he had good reason to do so.