Cardiovascular System Flashcards
(25 cards)
Blood passes here from the RA to the Right Ventricle
Tricuspid Valve
Series of ridges formed by bundles of cardiac tissue
Trabecular Carneae
Connected to the Papillary Muscles
Chordae Tendineae
Separates the ventricles
Interventicular septum
Two types of valves
Semilunar and atrioventicular valve
Temporary blood vessel during fetal life
Ductus arteriosus
Purpose of AV valves
To prevent backflow
True or False
The SL valve opens when the pressure in the ventricles exceeds the pressure in the arteries
True
The left side of the heart pumps oxygenated blood to all parts of the body and goes back to the right side of the heart
Systemic Circulation
The right side of the heart pumps deoxygenated blood
Pulmonary Circulation
Blood supply of the heart
Coronary Circulation
The heart has an inherent and rhythmical electrical activity. What is the source of that electrical activity
Autorhythmic fibers
2 functions of Conduction System
- Pacemaker
- Cardiac Conduction System
Setting the rhythm of heart contraction
Pacemaker
Depolarizing triggers an action potential (impulse) that propagates to both atri via gap junctions
Sinoatrial Node
Recieves the delayed impulse
Atrioventicular Node
Aka bundle of His
Atrioventicular Bundle
It extends through the interventicular septum toward the apex of the heart
Right and Left Bundle Branches
Conduct the action potential beginning at the apex of the heart
Purkinjie Fibers
Carries blood away from the heart
Arteries
Allow the exchange of substances between blood and body tissues
Capillaries
Little veins
Venules
Carries blood back to the heart
Veins
3 blood vessel wall
Tunica Externa
Tunica Media
Tunica Interna
