Heart and Blood Vessels Key terms
|Arteries||-blood vessels carrying blood from the heart to capillaries in body tissues.|
|Pulmonary Arteries||-carry deoxyonized blood.|
|Pulmonary veins||-O2 blood.|
-A heart chamber that receives blood returned to the heart by veins.
|Capillaries||-Tiny blood vessels in tissues where exchange of materials between the blood and tissue cells occurs.|
|Pericardium(peri=around)||-The membranous sac enclosing the heart.|
|Pulmonary circuit|| -(pulmo=lungs)|
-Transport of blood to and from the lungs.
|Systememic circuit||-Transport of blood to and from all parts of the body except lungs.|
|Vasoconstrictin (vas=vessel)||-A decrease in the diameter of blood vessels.|
|Vasodilation||-An increase in the diameter of blood vessels.|
|Veins||-Blood vessels carrying bood from capillaries in body toward the heart.|
A heart chamber that pumps blood into an artery.
|Two layers of pericardium|| -fibrous pericardium|
-inner parietal pericardium.
|Myocardium (mi=muscle)||-thick layer of cardiac muscle that consists of the heart wall.|
|Epicarduim or visceral pericardium||-the thin membrane that is firmly attached to the exterior surface of the myocardium.|
|Endocardium|| internal surface of the myocardium|
-single layer of squamous epithelium.
|Cardiac cycle|| --blood flows from the atria into the ventricles during ventricular diastole.|
-blood is pumped from the ventricles during ventricular systole.
|Blood flow|| -Superior and Inferior Vena Cava|
-Into Right and Left Lungs
-Back through Pulmonary veins