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Mrs. Keadle JH Science Name__________________________________ period _____ date assigned_____________ date due ______________ date returned ___________ The Respiratory System Match the following vocabulary words to their definition. Please write a capital letter in the blank. A. passages that direct air into the 1. pharynx lungs. B. connects the pharynx to the 2. larynx bronchi. It is lined with mucus and small hairs that trap particles. C. smallest structure in the lungs 3. respiration where gas exchange takes place between the lungs and the blood. D. (throat) is a long hollow tube that connects the nose to the trachea. 4. cellular respiration E. part of the throat where the vocal cords are located. 5. diaphragm F. (break down of glucose for 6. alveoli energy) requires oxygen as a reactant. G. smaller branches that come off 7. bronchioles of the bronchi. H. dome-shaped muscle below the 8. trachea lungs that causes us to inhale and exhale. I. the transport of oxygen from 9. bronchi outside the body to cells and tissues, and the transport of carbon dioxide and wastes away from cells and to the environment. 1 The Respiratory System Mrs. Keadle JH Science USE THIS DIAGRAM TO ANSWER QUESTIONS 10-14 10 11 How does the structure of the alveoli help process 1 in the diagram? A small patterns on the surface of the alveoli correspond with the shapes of CO2 and O2 molecules and allow them to enter B smooth, rounded membranes of the alveoli allow gas molecules to flow in and our freely C the hollow interior of the alveoli has ample space for unlimited gas molecules D thin walls of the alveoli let molecules of CO2 and O2 pass through easily What two body systems are interacting in this diagram? F respiratory-excretory G digestive-circulatory H respiratory-circulatory J nervous-endocrine 2 The Respiratory System Mrs. Keadle JH Science 12 13 14 Study the diagram carefully. What process is illustrated in the diagram? A photosynthesis B gas exchange C respiration D gas deposition Identify structure 2. F vein G artery H red blood cell J capillary Identify structure 3. 15 16 17 What is the original source of O2 in the alveoli? F heart G inhaled air H nasal passages J exhaled air What part of a heating and air conditioning system performs a function similar to nasal hairs? A ducts B thermostat C filter D cooling agent Which of the following is NOT a part of the respiratory system? A vein F diaphragm B artery G heart C red blood cell H lungs D capillary J trachea 3 The Respiratory System Mrs. Keadle JH Science 18 19 Which statement best describes the function of this human body system? A breaks down food into nutrients and wastes B supplies O2 to the blood, which in turn delivers O2 to all parts of the body C endocrine and reproductive D nervous and digestive This table shows approximate amounts of gases inhaled and exhaled by humans. What conclusion can you draw from this information? Gas Inhaled Air Exhaled Air nitrogen 78% 78% oxygen 21% 16% carbon dioxide 0.03% 4% F Inhaled air contains less oxygen and more carbon dioxide than exhaled air. G Inhaled air contains more oxygen and less carbon dioxide than exhaled air. H Inhaled air contains more oxygen and more carbon dioxide than exhaled air. J Inhaled air contains the same amount of nitrogen and carbon dioxide as exhaled air. 4 The Respiratory System Mrs. Keadle JH Science 20 This diagram shows one way in which two different body systems interact. Which statement identifies the two body systems that are interacting and describes what is happening. Gases Exchanged alveoli 21 capillaries A The alveoli in the respiratory system and the capillaries in the circulatory system are exchanging oxygen and carbon dioxide. B The alveoli in the muscular system and the capillaries of the circulatory system are exchanging oxygen and nitrogen. C The capillaries of the circulatory system and the alveoli of the excretory system are exchanging nitrogen and carbon dioxide. D The capillaries of the circulatory system and the alveoli of the nervous system are exchanging carbon dioxide and carbon monoxide. Which of the following best describes the alveoli? F G H J a single tube that connects the larynx to the lungs 22 Which body system moves oxygen into the blood and removes carbon dioxide from the blood? A excretory tiny sacs where oxygen and carbon dioxide are exchanged B digestive C respiratory a passageway that leads from the mouth to the top of the trachea D skeletal two folds of tissue stretched over the airway that vibrate to produce sound. 5 The Respiratory System Mrs. Keadle JH Science 23 24 Organisms that require oxygen must first transfer molecules of oxygen from their environment to their cells. In humans, which two systems are directly involved in the transfer of oxygen from the environment to their cells? F circulatory and nervous G respiratory and digestive H digestive and nervous J respiratory and circulatory Which best describes how the heart and lungs work together? A Movement of the lungs helps the heart to pump blood. B The lungs supply oxygen to the blood, which the heart pumps throughout the body. C The heart supplies oxygen to the blood, which the lungs pump throughout the body. D The heart and the lungs work together to help digest food. 6 The Respiratory System Mrs. Keadle JH Science 25 The diagram below shows the main parts of the respiratory system? Which of these correctly names the parts of the respiratory system numbered 1-5 in the diagram above? F 1. larynx. 2.pharynx, 3. trachea, 4. bronchi, 5. alveoli G 1. pharynx, 2. larynx, 3. trachea, 4. bronchi, 5. alveoli H 1. pharynx, 2. larynx, 3. bronchi, 4. trachea, 5. alveoli J 1. larynx, 2. trachea, 3. pharynx, 4. alveoli, 5. bronchi 7 The Respiratory System