Chapter 19: Part A Heart Anatomy Flashcards
What is the cardiovascular system?
Heart & blood vessels
Function of cardiovascular system
circulate blood throughput body
- continuous delivery of O2 & nutrients to cells
- removal of CO2 & other waste products of cells
Perfusion
blood flow through a tissue (mL/min/g)
- requires continual pumping of heart and healthy, open & unblocked blood vessels
Blood vessels
transport blood throughout the body
- arteries (blood away from heart)
- veins (blood toward the heart)
- capillaries (sites of exchange between the blood and air sacs of lungs or between the blood and the systemic cells)
Heart
central component of the cardiovascular system
- 4 chambered organ
- 2 sides of heart
- great vessels attached to heart
- 2 sets of valves located within heart
Right atrium
receiving chamber
- receives deoxygenated blood from the body
- right ventricle: pumps deoxygenated blood to the lungs
Left atrium
receiving chamber
- receives oxygenated blood from the lungs
- left ventricle: pumps oxygenated blood to the body
atrium
chamber or cavity which are connected to other chambers
ventricle
cavity within an organ
Right great vessel: Venae cava (SVC & IVC)
drain deoxygenated blood into right atrium
- pulmonary trunk: receives deoxygenated blood pumped from right ventricle
Left great vessel: pulmonary veins
drain oxygenated blood into left atrium
- aorta: receives oxygenated blood pumped from left ventricle
Right valve
- right atrioventricular (AV) valve: between right atrium and right ventricle
- pulmonary semilunar valve: between right ventricle and pulmonary trunk
Left valve
- left atrioventricular (AV) valve: between left atrium and left ventricle
- aortic semilunar valve: between left ventricle and aorta
Pulmonary circulation (“pulmonary circuit”)
movement of blood to and from the lungs for gas exchange
Systemic circulation (“systemic circuit”)
movement of blood to and from systemic cells
