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20 Cards in this Set
- Front
- Back
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What is myocardium?
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The middle layer of the wall of the heart.
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What are valves?
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Valves allow blood to flow in one direction. The heart has two kinds: atrioventricular and semilunar
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What is plasma?
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Straw-colored fluid that makes up about 55 percent of blood
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What is lymph?
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Fluid lost by the blood into surrounding tissue
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Where does gas exchange occur?
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In the alveolus.
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What is the atrium?
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The upper chamber of the heart that receives and holds blood that is about to enter the ventricle
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what is a lymphocyte?
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type of white blood cell that produces antibodies that help destroy pathogens
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What is atherosclerosis?
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A condition in which fatty deposits called plaque build up on the inner walls of the arteries.
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What are platelets?
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Cell fragment released by bone marrow that helps in blood clotting
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describe the path of air from the mouth to the heart
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pharynx, larynx, trachea, bronchus, lungs, bronchioles, alveoli, pulmonary vein, heart
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What are pacemakers?
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Small group of cardiac muscle cells in the right atrium that set the pace for the heart as a whole (aka Sinoatrial Node)
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What is the capillary?
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Smallest blood vessel; brings nutrients and oxygen to the tissues and absorbs CO2 and waste products
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What is the function of hemoglobin?
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To transport oxygen from the lungs to the tissues of the body
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What is the pharynx?
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muscular tube at the end of the throat that connects the mouth with the rest of the digestive tract and serves as passageway for aid and food
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What's the function of the ventricle?
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to pump blood out of the heart into the lungs
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What is the aorta?
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large blood vessel through which blood travels after it leaves the left ventricle
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Where are the vocal cords located?
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In the larynx
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What is pulmonary circulation?
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Pathway of circulation between the heart and the lungs
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What is systemic circulation?
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Pathway of circulation between the heart and the rest of the body except the lungs
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What is the bronchus?
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The passageway leading from the trachea to a lung
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