The Heart Quiz 3 Flashcards
De-oxygenated blood cycle:
Leaves heart- right ventricle
Enters lungs- pulmonary artery
Renters heart- from r atrium, pumped through tricuspid
The heart receives blood from?
Coronary arteries
Arteries carry
Oxygenated blood away from heart
Capillaries
Thin vessels that connect arteries and veins
Veins do what
Carry deoxygenated blood back to the heart
Sino atrial node
SA node surrounds SA artery on right coronary artery
Pacemaker***
Right atrium of heart
Sinus rhythm
Atrioventricular node
Coordinates top of heart
Connects atrial and ventricular fibers
Atrioventricular bundle
Collection of heart muscle specialized for electrical conduction that transmits electrical impulses from av node and apex
Purkinje fibers
Conduct cardiac action potentials
Maintains constant heart rhythms
Lub sound made from
Closing of av valves
Second sound dub coming from
Closing of semilunar valves
Diastole
Testing period where the heart refills w blood
Systole
Gathering blood and later contraction of blood