HomeCoursesMEDSCI 142: Organ SystemsLecture 22 Lecture 22 0% Question 1 of 44 What is the muscle posterior to the trachea? = Tracheolis. What is the muscle posterior to the trachea? = Tracheolis. Question 1 of 44Question 2 of 44 What cells in the bronchis produce mucous? (2) = Goblet, mucous glands. What cells in the bronchis produce mucous? (2) = Goblet, mucous glands. Question 2 of 44Question 3 of 44 What does pseudostratified mean? = Appear to be in layers but all cells attached to basement membrane (single layer). What does pseudostratified mean? = Appear to be in layers but all cells attached to basement membrane (single layer). Question 3 of 44Question 4 of 44 What keeps the bronchus open? = Cartilage plates. What keeps the bronchus open? = Cartilage plates. Question 4 of 44Question 5 of 44 Describe the components of the cross sectional section of a bronchis lumen – wall? = Ciliated epithelium, smooth muscle, mucous glands, cartilage plates, connective tissue Describe the components of the cross sectional section of a bronchis lumen – wall? = Ciliated epithelium, smooth muscle, mucous glands, cartilage plates, connective tissue Question 5 of 44Question 6 of 44 What doesn’t a bronchiole have that the bronchus does? (3) = Cartilage, mucous glands, goblet cells. What doesn’t a bronchiole have that the bronchus does? (3) = Cartilage, mucous glands, goblet cells. Question 6 of 44Question 7 of 44 What is different with the epithelium in the bonchil vs bronchus? = Thinner and shorter. What is different with the epithelium in the bonchil vs bronchus? = Thinner and shorter. Question 7 of 44Question 8 of 44 What are cells in the wall of the bronchiole? (not in bronchus) = Club cells. What are cells in the wall of the bronchiole? (not in bronchus) = Club cells. Question 8 of 44Question 9 of 44 What are the club cells functions? (1) = Secrete watery fluid, contain anti-microbial properties. What are the club cells functions? (1) = Secrete watery fluid, contain anti-microbial properties. Question 9 of 44Question 10 of 44 What is the function of smooth muscle in the bronchioles? = Constrict bronchioles to control air flow into respiratory zone. What is the function of smooth muscle in the bronchioles? = Constrict bronchioles to control air flow into respiratory zone. Question 10 of 44Question 11 of 44 What is bronchoconstriction? What does it affect? = Affects smooth muscle in bronchioles which constrict. What is bronchoconstriction? What does it affect? = Affects smooth muscle in bronchioles which constrict. Question 11 of 44Question 12 of 44 How does an asthmatic’s smooth muscle contribute to asthma? (2) = Thickened and sensitive. How does an asthmatic’s smooth muscle contribute to asthma? (2) = Thickened and sensitive. Question 12 of 44Question 13 of 44 Why does asthma not affect the bronchus? = Cartilage keeps it open. Why does asthma not affect the bronchus? = Cartilage keeps it open. Question 13 of 44Question 14 of 44 How does Ventolin work to relieve asthma? = Bronchodilator (relaxes smooth muscle). How does Ventolin work to relieve asthma? = Bronchodilator (relaxes smooth muscle). Question 14 of 44Question 15 of 44 What kind of condition is asthma? = Inflammatory condition. What kind of condition is asthma? = Inflammatory condition. Question 15 of 44Question 16 of 44 What kind of medicine prevents? = Cortisosteroids. What kind of medicine prevents? = Cortisosteroids. Question 16 of 44Question 17 of 44 What is the last bronchiole of the conducting zone called? = Terminal bronchiole. What is the last bronchiole of the conducting zone called? = Terminal bronchiole. Question 17 of 44Question 18 of 44 What is the functional difference of a bronchiole in the respiratory zone vs conduct zone? = Gas exchange. What is the functional difference of a bronchiole in the respiratory zone vs conduct zone? = Gas exchange. Question 18 of 44Question 19 of 44 What is every alveoli surrounded by? = Capillaries. What is every alveoli surrounded by? = Capillaries. Question 19 of 44Question 20 of 44 What is Type I alveolar cell? = Squamous pneumocyte. What is Type I alveolar cell? = Squamous pneumocyte. Question 20 of 44Question 21 of 44 What is distinctive about its structure? = Thin and spread out. What is distinctive about its structure? = Thin and spread out. Question 21 of 44Question 22 of 44 What are Type II alveolar cells? = Surfuctant cells. What are Type II alveolar cells? = Surfuctant cells. Question 22 of 44Question 23 of 44 What is the function of surfactant cells? = Secrete surfactant. What is the function of surfactant cells? = Secrete surfactant. Question 23 of 44Question 24 of 44 What does surfactant do? (1) = Prevents collapse of bronchiole, prevents visceral pleura from adhering to parietal. What does surfactant do? (1) = Prevents collapse of bronchiole, prevents visceral pleura from adhering to parietal. Question 24 of 44Question 25 of 44 What is the over result of its function? = Reduce breathing work. What is the over result of its function? = Reduce breathing work. Question 25 of 44Question 26 of 44 What is the defence system in the alveolar? = Macropjage (alveolar macrophage) What is the defence system in the alveolar? = Macropjage (alveolar macrophage) Question 26 of 44Question 27 of 44 Which cells do the capillaries contact? = Squamous pneumocyte. Which cells do the capillaries contact? = Squamous pneumocyte. Question 27 of 44Question 28 of 44 What are the 4 layers of the blood-air barrier? = Squamous pneumocyte, basement membrane (2), endothelium. What are the 4 layers of the blood-air barrier? = Squamous pneumocyte, basement membrane (2), endothelium. Question 28 of 44Question 29 of 44 Which layers are fused together? = Basement membrane. Which layers are fused together? = Basement membrane. Question 29 of 44Question 30 of 44 What is the purpose of joining the basement membranes? = Reduce thickness. What is the purpose of joining the basement membranes? = Reduce thickness. Question 30 of 44Question 31 of 44 How big is a normal blood-air barrier? = 0.1 – 0.5mm How big is a normal blood-air barrier? = 0.1 – 0.5mm Question 31 of 44Question 32 of 44 What is basement membrane made of? = Collagen. What is basement membrane made of? = Collagen. Question 32 of 44Question 33 of 44 What causes lung fibrosis? = Thickening of basement membrane (increase in collagen). What causes lung fibrosis? = Thickening of basement membrane (increase in collagen).Question 33 of 44Question 34 of 44 What is the result of thickened blood-brain barrier (basement membrane). = Increased distance for gas exchange. What is the result of thickened blood-brain barrier (basement membrane). = Increased distance for gas exchange. Question 34 of 44Question 35 of 44 How are the segments like titanic? = Each has its own blood supply and air supply. How are the segments like titanic? = Each has its own blood supply and air supply. Question 35 of 44Question 36 of 44 What does the hilum contain? (2) = Blood vessels, bronchus. What does the hilum contain? (2) = Blood vessels, bronchus. Question 36 of 44Question 37 of 44 What are the pleurae? (What does it line?) (2) = Membranes lining the lung and thoracic cavity. What are the pleurae? (What does it line?) (2) = Membranes lining the lung and thoracic cavity. Question 37 of 44Question 38 of 44 What are the functions of the pleurae? (2) = Prevent friction, prevents separation of pleura and thus move with the thoracic wall. What are the functions of the pleurae? (2) = Prevent friction, prevents separation of pleura and thus move with the thoracic wall. Question 38 of 44Question 39 of 44 Identify the layers of the pleura? (Deep-superficial) = Visceral, serous fluid/space, parietal membrane. Identify the layers of the pleura? (Deep-superficial) = Visceral, serous fluid/space, parietal membrane. Question 39 of 44Question 40 of 44 Explain the process of expanding the lungs? = Muscles contract and expand thoracic space, parietal pleura attached to thoracic wall and so moves with it, visceral pleura adheres to parietal pleura through serous fluid and moves with it. Explain the process of expanding the lungs? = Muscles contract and expand thoracic space, parietal pleura attached to thoracic wall and so moves with it, visceral pleura adheres to parietal pleura through serous fluid and moves with it. Question 40 of 44Question 41 of 44 How much air movement is the rib cage responsible for? = 25%. How much air movement is the rib cage responsible for? = 25%. Question 41 of 44Question 42 of 44 Which muscles move the ribs up? = External intercostal. Which muscles move the ribs up? = External intercostal. Question 42 of 44Question 43 of 44 When do we need muscles to breathe out? = During exercise. When do we need muscles to breathe out? = During exercise. Question 43 of 44Question 44 of 44 Which muscles are responsible for this? = Intercostal (internal). Which muscles are responsible for this? = Intercostal (internal). Question 44 of 44 Loading...
