Chapter 15 Cardiovascular System Part I Structure of the Heart

Introduction Heart 1. 2. Circulation of Blood Cardiovascular system 3.

Introduction Pulmonary Circuit 1. 2. 3. Systemic Circuit

Fig. 15.1

Size and Location of the Heart 1. 2. Location 3. 4. 5.

Fig. 15.2

Fig. 15.3

Coverings of the Heart Pericardium (pericardial sac) Pericarditis 1. 2. 3. 4. Pericarditis

Fig. 15.4

Wall of the Heart Epicardium 1. 2. 3. Myocardium Endocardium

Fig.15.5

Heart Chambers and Valves Four hollow chambers 1. 2. Atria a. b. c. 3. Ventricles

Fig. 15.6

Heart Chambers and Valves Right atrium 1. Receives blood . c. 2. Low O2 blood Tricuspid valve 1. 2. 3. 4. 5. 6.

Fig. 15.7

Heart Chambers and Valves Right Ventricle 1. Contracts a. b. 2. Thinner muscular wall (than l. ventricle) Pulmonary Valve 1. 2. 3. 4.

Heart Chambers and Valves Left atrium 1. Receives blood from lungs a. b. Mitral Valve 1. 2. 3. 4. 5.

Fig. 15.6

Fig. 15.6

Heart Chambers and Valves Left Ventricle 1. Contracts a. b. 2. Thicker walls than r. ventricle Aortic Valve 1. 2. 3.

Fig. 15.8, 15.9