Cardio and Vascular System Flashcards
Functions of the heart
Generating blood pressure
Routing blood
Ensuring one-way blood flow
Regulating blood supply
Heart separates pulmonary and systemic circulations.
Routing blood
Heart valves ensure one-way flow.
Ensuring one-way blood flow
Changes in contraction rate and force match blood delivery to changing metabolic needs.
Regulating blood supply
Cardiac muscle tissue and specialized muscle tissue.
Heart
Four Chambers
Right Atrium
Right Ventricle
Left Atrium
Left Ventricle
Four valves
Tricuspid valve
Pulmonic valve
Mitral Valve
Aortic Valve
Receives oxygen-poor blood from the body and pumps it to the right ventricle.
Right atrium
Pumps the oxygen-poor blood to the lungs.
Right ventricle
Receives oxygen-rich blood from the lungs and pumps it to the left ventricle.
Left atrium
Pumps the oxygen-rich blood to the body.
Left ventricle
A collection of specialised cells (pacemaker cells), and is located in the upper wall of the right atrium, at the junction where the superior vena cava enters.
Sinoatrial (SA) node
