| A | B |
|---|
| Myocardium | muscle layer of the hear |
| Atrium | the upper chamber of the heart |
| Ventricle | pumps blood OUT of the heart |
| Valves | Flaps of connective tissue located in the heart |
| Pulmonary circulation | Oxygen poor blood from heart to lungs |
| Systemic circulation | Oxygen rich blood that goes out throughout the body |
| pacemaker | located in the right atrium, sets the pace of the heart |
| Arteries | large vessels, carry blood from the teart to the body |
| Capillaries | very narrow, blood passes |
| Veins | blood returned to the heart |
| Blood Pressure | fluid pressure in the arteries |
| Systolic pressure | the force in the arteries when the ventricles contract |
| Diastolic pressure | the force in the arteries when the ventricles relax |
| Plasma | straw colored fluid, 55% of blood volume |
| red blood cells | most numerous,transports oxygen |
| hemoglobin | a protein that binds oxygen |
| white blood cells | garud against infection, attack bacteria |
| platelets | clots blood |
| lymph | network of vessels, nodes, |
