The Cardiac Cycle Flashcards
name for divide between two sides of the heart which signals are sent from the atrium to the ventricle
bundle of His
name for artery which takes blood from heart to body
aorta
name for artery which takes blood from heart to lungs
pulmonary artery
name for vein which carries blood from the lungs to the heart
pulmonary vein
name for vein which carries blood from the body to the heart
vena cava
name for chamber which pumps blood to the legs
right ventricle
name for chamber which pumps blood to the lungs
left ventricle
name for chamber which pumps blood to the left ventricle
left atrium
name for chamber which pumps blood to the right ventricle
right atrium
name for valves between chambers
atrioventricular valves
name for valves between ventricles and blood vessels
semi-lunar valves
define diastole
the relaxation phase of the cardiac cycle
what happens during systole
the SAN transmits electrical impulses throughout the atria (often called pacemaker). muscles contract. blood forced to ventricles. ventricles contract, opening semi-lunar valve blood is forced out into arteries
name the two nodes
atrioventricular node and sinoatrial node
how is the signal from the SAN delayed before it gets to the ventricle
non-conductive tissue in in the atrioventricular septum
