Thoracic cavity: Thoracic cavity, the second largest hollow space of the body. It is enclosed by the ribs, the vertebral column, and the sternum, or breastbone, and is separated from the
Map of ZIP Code. ZIP code 92407 is centered in San Bernardino County and overlaps Medical Service Study Area(s) 151e, 151e, 151g, 151g, 146, 146, 147, 147, 148 and 148.
San Bernardino County, officially the County of San Bernardino, is a county located in the southern portion of the U.S. state of California. As of the 2010 census, the population was 2,035,210, making it the fifth-most populous county in California, and the 12th-most populous in the United States. The county seat is San Bernardino. San Bernardino County is included in the Riverside-San Bernardino-Ontario, CA Metropolitan Statistical Area, also known as the Inland Empire, as well as the Los Angel