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.
Coast Ranges - The Coast Ranges mountains span two-thirds of the state of California and extend 550 to 600 miles along its coast from northern California redwood coast to Santa Barbara. San Francisco Bay severs the Coast Ranges them into two ranges-- the northern and southern Coast Ranges.