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| basically puts all cells in contact with the environment |
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| the system of organs and tissues, including the heart, blood, blood vessels, lymph, lymphatic vessels, and lymph glands, involved in circulating blood and lymph through the body. |
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| vessel that carries blood away from the heart to other parts of the body |
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| vessel that returns blood to the heart |
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| microscopic blood vessel that carries blood between an artery and a vein, allowing the exchange of substances between the blood and interstitial fluid |
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| the right upper chamber of the heart that receives blood from the venae cavae and coronary sinus |
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The chamber on the right side of the heart that receives venous blood from the right atrium and forces it into the pulmonary artery
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| an artery conveying venous blood from the right ventricle of the heart to the lungs |
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| the left upper chamber of the heart that receives blood from the pulmonary veins |
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| The chamber on the left side of the heart that receives the arterial blood from the left atrium and contracts to force it into the aorta |
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| artery that carries blood directly from the heart to the rest of the body |
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| one of two large veins discharging blood into the right atrium of the heart, conveying blood from the head, chest, and upper extremities |
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| one of two large veins discharging blood into the right atrium of the heart, conveying blood from all parts below the diaphragm |
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| blood cell containing hemoglobin, which transports oxygen; also called an erythrocyte |
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| iron-containing protein in red blood cells that carries oxygen for delivery cells |
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| (White Blood Cell)any of various nearly colorless cells of the immune system that circulate mainly in the blood and lymph and participate in reactions to invading microorganisms or foreign particles, comprising the B cells, T cells, macrophages, monocytes, and granulocytes |
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| liquid portion of blood made up of water, dissolved salts, proteins, and other substances |
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| the system by which lymph is returned from the cells to the blood and by which white blood cells are produced in response to inflammation or presence of antigens; in mammals, the system includes the lymph glands, vessels and sinuses through which lymph is carried, and lymphoid tissues, as bone marrow and the thymus |
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| circuit of blood flow that carries blood between the heart and lungs |
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| circuit of blood flow that carries blood between the heart and the rest of the body |
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| first number of blood pressure reading; measures the pressure on artery walls when heart ventricles contract |
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| second number of blood pressure reading; measurement of the pressure on artery walls when the heart is relaxed |
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| the junction in the throat of the alimentary canal and the trachea |
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| flap of tissue that covers the trachea during swallowing, preventing food from entering the lungs |
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| voice box; contains the vocal cords |
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| in some arthropods, chitin-lined air tube that forms part of the respiratory system; in humans, tube between the larynx and bronchi through which air travels to the lungs; also called the windpipe |
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| one of two tubes connecting the trachea to each lung |
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| organ consisting of sponge-like tissue that exchanges oxygen and carbon dioxide with the blood |
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| thin tube that branches from a bronchus within a lung |
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| on of millions of tiny sacs within the lungs where gas exchance occurs |
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