Definition. A nuclear stress test measures blood flow to your heart at rest and while your heart is working harder as a result of exertion or medication. The test provides images that can show areas of low blood flow through the heart and damaged heart muscle.
Lesson at a Glance Outline. Chapter 1, Lesson 2: California's Regions (pp. 12-18) I. Four Regions. A. California's four main regions -- the coast, the Central Valley, the mountains, and the deserts -- each have features that set it apart from the other areas. b. Each region offered early settlers different challenges and advantages.
Credit: Cory Sitko CC-BY 2.0. When the Western region of the United States is broken down even further, California falls into the Pacific region of the country. The Pacific states are those that are located on the coast of the Pacific Ocean, including Alaska, California, Hawaii, Oregon and Washington. The states to the east of California are in the Rocky Mountain region, which includes Arizona, Colorado, Idaho, Montana, Nevada, New Mexico, Wyoming and Utah.