1. The Heart

3. Heart Valve Replacement Surgery

5. Cardiovascular System
Transportation of oxygen, nutrients, cell wastes, hormones = body homeostasis
Made up of the
Blood
Heart
Blood Vessels
Heart provides the force to move blood

6. The Heart Approx. size of closed fist Flanked by the lungs
Lies between the sternum and vertebral column (CPR)
Rests of diaphragm
Middle left of thoracic cavity
Apex points downward left; base (broad part of heart)
Inside pericardium

8. Heart Disease in the U.S.

10. Chamber of the Heart Atria = receiving chambers
Ventricles = pumps out blood
Blood flows from body  atria  ventricles  to body (2 circuits)

11. Chambers of the Heart
2 Atria
2 ventricles

12. Right Atrium Recieves blood from superior and inferior vena cava
Blood passes through tricuspid valve to get to right ventricle
?v=ruM4Xxhx32U

13. Right Ventricle
Tricuspid valve connected by chordae tendinae and then to papillary muscles
Interventricular septum separates ventricles
Blood goes through pulmonary valve into the pulmonary trunkwhich splits into right and left pulmonary arteries

14. Left Atrium Receives blood from lungs through 4 pulmonary veins
Blood flows through bicuspid valve into left ventricle

15. Left Ventricle
Chordae tendinae anchored by papillary muscles (of bicuspid valve)
Blood passes through aortic valve into ascending aorta, then arch, and descending aorta
Muscular wall MUCH thicker because it has to pump the same amount of blood FARTHER distance