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.
This is a list of rivers in the U.S. state of California, grouped by region. 1 North Coast (north of Humboldt Bay) 1.1 Smith River. 1.2 Klamath River 1.2.1 Trinity River.