ch. 19 bc

is a pump that keeps blood flowing through the vessels

• heart

• vessels

deliver blood to body tissues and returns it to the heart

• heart

• vessels

open and close in response to pressure changes

• heart

• vessels

• heart valves

carries blood to lungs for gas exchange and back to heart

• pulmonary circuit

• systemic circuit

supplies oxygenated blood to all tissues of the body and returns it to the heart

• pulmonary circuit

• systemic circuit

allows hear to beat without friction

• pericardium

• fibrous pericardium

• serous pericardium

• pericardial cavity

outermost layer; tough, fibrous

• pericardium

• fibrous pericardium

• serous pericardium

• pericardial cavity

parietal layer - lines fibrous pericardium

visceral layer (epicardium) - adheres to heart surface itself

• pericardium

• fibrous pericardium

• serous pericardium

• pericardial cavity

space between parietal and visceral layers of serious pericardium, filled with pericardial fluid

• pericardium

• fibrous pericardium

• serous pericardium

• pericardial cavity

inflammation of the pericardium

roughens membrane surfaces -> friction rub (creaking sound) heard with stethoscope

• pericarditis

• cardiac tamponade