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.
The Four Regions of Texas. This region includes the Llano Estacado, the Panhandle, Edwards Plateau, Toyah Basin, and the Llano Uplift. It is bordered on the east by the Caprock Escarpment in the panhandle and by the Balcones Fault to the southeast.