Video: The Great Migration: Definition & Causes. The economic conditions of World War I led to a massive movement of African Americans from the South to the North, known as the Great Migration. Examine the causes and effects of this phenomenon.
Physicians may want to look closer at WBC levels when obtaining the tests for other reasons, Manson notes. However, infections can cause a high white blood cell count that may make it appear that a patient is at high risk for heart disease when she is not. Therefore, routinely giving everyone the test to screen for heart disease is premature. More research needs to be done..
hemoglobin a protein found in red blood cells thatbinds to oxygen in the lungs andtransports it to tissues 14. hemophilia a genetic disorder where the blood doesnot clot 15. high bloodpressurethis can cause the heart to work harderand can weaken and damage the heartmuscle and blood vessels 16.