brings oxygen-poor blood into the heart from the upper parts of the body
What is the superior vena cava?
100
The number of the chambers of the heart
What is four?
100
the beat of the heart as felt through the walls of arteries
What is the pulse?
200
small artery
What is an arteriole?
200
lower chambers of the heart
What are the ventricles?
200
valve that lies between the right atrium and the right ventricle
What is the tricuspid valve?
200
blood containing a high concentration of oxygen
What is oxygenated blood?
200
three distinctive tissue layers of the heart
What are the endocardium, myocardium and pericardium?
300
small vein
What is a venule?
300
muscular wall dividing the right side of the heart from the left
What is the septum?
300
valve that lies between the left atrium and the left ventricle
What is the bicuspid/mitral valve?
300
the valve through which blood leaves the left ventricle
What is the aortic valve?
300
the portion of the cardiovascular system which carries deoxygenated blood away from the heart, to the lungs, and returns oxygenated (oxygen-rich) blood back to the heart
What is pulmonary circulation?
400
return blood from body organs and tissues back to the heart
What are veins?
400
heart muscle
What is the myocardium?
400
carries oxygen-poor blood to the lungs from the heart
What is the pulmonary artery?
400
The pacemaker of the heart
What is the sinoatrial (SA) node?
400
the portion of cardiovascular system supplying oxygenated blood to and returning deoxygenated blood from the tissues of the body to the heart