Pulmonary veins-->Left atrium-->left AV valve (bicuspid)-->left ventricle-->aortic semilunar valve-->aorta-->arteries-->arterioles-->venous capillaries-->venules-->veins
Superior vena cava and inferior vena cava-->right atrium-->right AV (tricuspid) valve-->Right ventricle-->pulmonary semilunar valve-->pulmonary artery-->lungs
The formed elements of the blood include _____________, white blood cells. and __________, which are cell fragments.
red blood cells, platelets
The main function of RBCs is ______ transport. This is accomplished by ___________, the iron-containing pigment that makes the cell red.
The function of WBCs is to ___________.
immunity and defense
The function of platelets is ______________. The technical term for this is hemostasis.
The cardiovascular system includes the ________ to pump blood and the vessels.
_______ carry blood TO the tissues, and _______ carry blood AWAY from the tissues.
The hear has 4 chambers, 2 upper _________ and 2 lower _________.
Between each upper and lower chamber on the left and right side of the heart is a valve called the ____________ valve (also known as the mitral or bicuspid valve)
Between the right/left ventricle and its artery is the ____________ valve.
All four valves function to prevent __________ of the blood.
The ________ circuit takes deoxygenated blood to the lungs; its pumping chamber is located on the _______ side of the heart.
The __________ circuit takes oxygenated blood and distributes it to the entire body; its pumping chamber is located on the _____ side of the heart.
The conduction system of the heart controls the contraction sequence. It starts at the ___________ node, which is the pacemaker of the heart. From there, the impulses go to the ______________.
sinoatrial (SA) node, Atriventricular (AV) node
Atria contract, then as they relax, ventricles contract. Contraction is called _________ and relaxation is called ________. When the ventricles finish contracting, the entire heart remains relaxed so it can fill with blood before contracting again.
The term for one complete contraction/relaxtaion is the ______________.