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.
The Pacific Coastal Range The Pacific Coastal Range consists of Fertile Valleys, The Sierra Nevada Mountains and the Cascade Mountain Range. the biggest and most important cities of the Pacific Coastal Range are, Los Angeles, San Diego, San Francisco, Portland, Seattle and Vancouver. tourists like to go to the Napa Valley region to visit the vineyards and wineries that it has.