Also known as John Wayne Airport, SNA is the only commercial service airport in Orange County, California. It is about 35 miles south of Los Angeles, between the cities of Costa Mesa, Irvine, and Newport Beach, and is 14 miles from Disneyland.
potassium channel a voltage-gated protein channel selective for the passage of potassium ions. protein channel a watery pathway through the interstices of a protein molecule by which ions and small molecules can cross a membrane into or out of a cell by diffusion.
(2.3). where the sum runs over all ion channels. In the standard Hodgkin-Huxley model there are only three types of channel: a sodium channel with index Na, a potassium channel with index K and an unspecific leakage channel with resistance R; cf.