| A | B |
|---|
| artery | blood vessels that carry blood away from the heart to the tissues and organs of the body. |
| aorta | the major artery carrying oxygenated blood away from the heart |
| aortic arch | the heart-like blood vessels in earthworms |
| atrium | the two upper, think-walled chambers of the heart. |
| capillary | microscipic blood vessel that connects the smallest arteries to the smallest veins |
| closed circulatory system | a system in which the blood is always contained with the tubes or vessels in the body. |
| contractile vacuole | organelle that holds water in protists. |
| conronary circulation | the branch of the the system circulation that supplies the heart muscle with the blood. |
| diastol | the period of relaxation of the heart. |
| dorsal vessel | pertaining the upperside or the back of the bilaterally. |
| intercellular fluid | a colorlesss, watery solution that bathes all the body cells |
| lymph | interstitial fluid found in conducting vesselsatic system. |
| lymphatic system | a system of vessels that return excess fluid and proteins from the intercellular spaces to the blood. |
| open circulatory system | the blood flows directly into the body tissues. |
| pulmonary circulation | this pathway in the body carries blood between the heart and lungs. |
| systemic circulation | a pathway that carries blood between the heart and the rest of the body, excluding the lungs. |
| systole | the period of contraction of the heart. |
| vein | vessels that return blood from the body tissues to the heart. |
| ventricle | the two lower,think-walled chambers of the heart. |
| hemoglobin | iron-containing respiratory pigment that increases the oxygen-carring capacity of the blood |
| valve | flap-like structure that permits body fliuds to flow only in one direction |
| pericardium | tough, protective membrane surrounding the outside of the heart |
| superior vena cava | a large vein that collects blood from the upper half of the body and returns it to the right atrium |
| arterioles | a cluster of capilaries |
| embolism | obstructionof a blood vessel by a mass of material such as an air bubble or detached blood clot |
| agglutinin | antigen on the surface of the red blood cells; type A has A antigens... |
| agglutination | occurs when antibodies and antigens of the some blood type come together causing blood cells to clump together |
