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Name Date Class Quick Vocabulary Lesson 1 Lesson 2 alveoli microscopic sacs within the artery large vessel that takes blood lungs where gas exchange occurs breathing movement of air into and out of the lungs bronchi two tubes that branch off of the trachea and lead to the lungs cellular respiration chemical reactions that transform energy in food to usable energy diaphragm large muscle below the lungs that contracts and relaxes as you breathe larynx triangle-shaped area Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc. connected to the pharynx; voice box lungs main organs of the respiratory system pharynx tubelike passageway at the top of the throat that receives air, food, and liquids from the mouth or nose trachea tube connected to the larynx and held open by C-shaped rings of cartilage Respiration and Circulation away from the heart atherosclerosis buildup of fatty material within the walls of arteries atrium one of the two upper chambers of the heart through which blood enters capillaries tiny blood vessels that deliver supplies to individual cells and take away waste materials coronary circulation movement of blood through vessels that supply blood to all the cells of the heart factor something that helps produce a result pulmonary circulation movement of blood through vessels to and from the lungs systemic circulation movement of blood through vessels to and from the heart and body vein vessel that carries blood toward the heart ventricle one of the two lower chambers of the heart through which blood exits 3 Name Date Class Quick Vocabulary Lesson 3 Lesson 4 plasma yellowish, liquid part of lymph tissue fluid absorbed by the blood platelets small, irregularly shaped pieces of cells that plug wounds and stop bleeding lymph vessels lymphatic system part of the immune system that helps destroy microorganisms that enter the body Rh factor protein on red blood cells lymph node small, spongy structure that helps determine a person’s blood type that filters particles from lymph spleen organ that recycles worn-out red blood cells and produces and stores lymphocytes thymus organ of the lymphatic system in which T cells complete their development vessel tube through which a body fluid travels Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc. 4 Respiration and Circulation