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2. In the lungs, which one of the following is NOT a barrier to gas exchange between red blood cells and the alveolar space? A fluid layer of water and surfactants covering the luminal surface of alveolar cells Basement membranes of endothelial and alveolar cells Alveolar cells Smooth muscle cells surrounding the endothelial cells The plasma membrane of the endothelial cells 3. What happens to blood when it is pumped into the thin-walled blood vessels of the lungs? Platelets are exchanged for plasma. Carbon dioxide is replaced with oxygen. Blood fills the lungs and causes coughing. Nothing -- the lungs are just a place blood goes through on its way back to the heart. 4. What does the cilia do in the respiratory system? The cilia carries food and air through the respiratory system. The cilia is known to be part of a cell. Cilia filters particles that enter the nose and air passages. Cilia contains the vocal cords.

2. In the lungs, which one of the following is NOT a barrier to gas exchange between red blood cells and the alveolar space? A fluid layer of water and surfactants covering the luminal surface of alveolar cells Basement membranes of endothelial and alveolar cells Alveolar cells Smooth muscle cells surrounding the endothelial cells The plasma membrane of the endothelial cells 3. What happens to blood when it is pumped into the thin-walled blood vessels of the lungs? Platelets are exchanged for plasma. Carbon dioxide is replaced with oxygen. Blood fills the lungs and causes coughing. Nothing -- the lungs are just a place blood goes through on its way back to the heart. 4. What does the cilia do in the respiratory system? The cilia carries food and air through the respiratory system. The cilia is known to be part of a cell. Cilia filters particles that enter the nose and air passages. Cilia contains the vocal cords.

Biology: The Unity and Diversity of Life (MindTap Course List)
Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN:9781305073951
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Chapter38: Respiration
Section: Chapter Questions
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12. In the lungs, which one of the following is NOT a barrier to gas exchange between red blood cells and the alveolar space? a. A fluid layer of water and surfactants covering the luminal surface of alveolar cells b. Basement membranes of endothelial and alveolar cells c. Alveolar cells d. Smooth muscle cells surrounding the endothelial cells e. The plasma membrane of the endothelial cells 13. What happens to blood when it is pumped into the thin-walled blood vessels of the lungs? a. Platelets are exchanged for plasma. b. Carbon dioxide is replaced with oxygen. c. Blood fills the lungs and causes coughing. d. Nothing -- the lungs are just a place blood goes through on its way back to the heart. 14. What does the cilia do in the respiratory system? a. The cilia carries food and air through the respiratory system. b. The cilia is known to be part of a cell. c. Cilia filters particles that enter the nose and air passages. d. Cilia contains the vocal cords.
Transcribed Image Text:12. In the lungs, which one of the following is NOT a barrier to gas exchange between red blood cells and the alveolar space? a. A fluid layer of water and surfactants covering the luminal surface of alveolar cells b. Basement membranes of endothelial and alveolar cells c. Alveolar cells d. Smooth muscle cells surrounding the endothelial cells e. The plasma membrane of the endothelial cells 13. What happens to blood when it is pumped into the thin-walled blood vessels of the lungs? a. Platelets are exchanged for plasma. b. Carbon dioxide is replaced with oxygen. c. Blood fills the lungs and causes coughing. d. Nothing -- the lungs are just a place blood goes through on its way back to the heart. 14. What does the cilia do in the respiratory system? a. The cilia carries food and air through the respiratory system. b. The cilia is known to be part of a cell. c. Cilia filters particles that enter the nose and air passages. d. Cilia contains the vocal cords.
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