HSC 120 Chapter 9: Cardiovasular system
Document Summary
Major organs and structures: heart, aorta, superior and inferior venae cavae. Functions: transportation, protection by fighting foreign invaders and clotting to prevent its own loss, acid-base balance, fluid and electrolyte balance, and temperature regulation. Phag/o: eat, swallow thromb/o: clot leuk/o: white. The heart serves as a pump to circulate blood through a closed circuit of blood vessels out of the tissues of the body and back again to the heart. Hemocytoblast: the starting cell for the production of all the formed elements. This cell is said to be pluripotent- hemocytoblasts are located in red bone marrow, they must be stimulated to grow and divide to become one of the four elements. Pluripotent: means it can become any one of seven different types of formed elements. Myeloid hemopoiesis: the production of all the formed elements in the red bone marrow. Begins with hemocytoblasts in the red bone marrow.
