Blood is returned from right side of heart from lungs
Blood leaves left ventricle through what
Aorta
Which valve is closed during heart relaxation to prevent blood from backflow
Aortic semilunar
As heart beats, propels blood
Arteries
Walls much thicker than veins and are heavier and stretchy; carry blood away from heart
Arteries
2 superior chambers are called what
Atrium
1 cell layer thick; substances exchanged easily between blood and tissue cells
Capillary
Tiny white chords anchor cusp valves to endocardium wall
Coordinae tendinae
Oxygenated blood nourishing myocardium came from vessels branching off aorta called what
Coronary artery
Pulmonary arteries transport what type of blood
Deoxinated
What is the Sac that surrounds the heart called
Pericardium
Transportation of blood from right side of heart to lungs back to left of heart is what
Pulmonary circulation
What is the valve located between the right atrium and right ventricle?
Tricuspid
Average heart beats 75 per min at rest
True
Exchanges between blood and tissue cells occcur in capillaries
True
The SA node is the pacemaker of the heart.
True
Coordinae tendinae enter semilunar valves
False
Inferior vena cava returns blood from all body regions above diaphragm
False
Semilunar valves prevent backflow of blood into atria from ventricles
False
Veins draining head and neck region come from what region
Superior vena cava
Carry blood back toward heart and pressure is low, thinner walls, larger have valves that prevent backflow
Veins
What is the largest vain in the body
Vena cava
Inferior chamber called
Ventricles
