Heart 1 Flashcards
Cardiovascular system consists of
Heart
Blood vessels
Blood
Primary function of the heart
Deliver oxygen and water nutrients and electrolyte to all body tissue
Remove carbon dioxide and metabolic waste product from tissues and return them to the lungs and kidney for removal
Heart
Pump
Blood vessels
Delivering and return system
Blood
Transport medium
Hesrt wall
Pericardium
Pericardium
Outer most sac that surrounds heart consist of serous pericardium and fibrois pericardium
Pericardial cavity
Lies between the parietal and visceral pericardium. This cavity contains a small amount of fluids
Heart wall
Endocardium
Myocardium
Epicardium
Endocardium
Lones inside the upper chambers of rhe heart
Myocardium
Cardiac muscle. The working part of the heart
Epicardium
Covers the external surface of the heart
Chambers pf the heart
Right- atria and ventricle
Left - atria and ventrcle
Right
Body ra rv lungs left aid eof the heart
Low pressure- low resistance
Left
Atria and ventricle
( highpressure and high resistance)
Lungs lv la body then aorta
Heart valves
2 semilunar valves
2 atrioventricular valve
Valves ensure
Blood flows in one direction atria ventricle
They open and close passively based on fluid
Coronary circulation
Coronary artery
Coronary vein
Cotonary artery
Responsible for delivering oxygenated blood to the myocardium
Coronary vein
Collect deoxygenated blood
Right coronary artery supplied
Blood to ra, part of la and most if rv
Left coronary artery branches
Into left anterior descending abd circumflex artery, arteries supply blood to lv la the interventricular septum a d a portionof the rv
