(Solved): TRUE/FALSE STRUCTURE 1 The upper respiratory tract is formed by the trachea, bronchi, and lungs. 2 ...

TRUE/FALSE STRUCTURE 1 The upper respiratory tract is formed by the trachea, bronchi, and lungs. 2 The boundaries of the thoracic cavity are the sternum, rib cage, spinal column, vertebrae, and diaphragm muscle. 3 Positive pressure in the pleural space keeps the lungs and thorax connected and allows them to function as one unit. 4 During inspiration the pressure in the lungs increases. 5 The bronchioles are composed solely of smooth muscle and mucous membrane. 6 The chest wall is made up of the ribcage, the diaphragm, the abdominal wall, and the abdominal contents. 7 The lumen of the trachea is lined with pseudostratified ciliated columnar epithelium. 8 The secondary and tertiary bronchi become increasingly wider as they branch. 9 The left lung contains three lobes and ten segments and the right lung contains two lobes and eight segments. 10 The respiratory bronchioles open into alveolar ducts which terminate $n$ alveolar sacs. 11 Each lung is encased in a visceral pleura and the inside surface of the thoracic cavity is lined by a parietal pleura. 12 When the diaphragm contracts it raises and decreases the volume of the thoracic cavity. 13 The external intercostal muscles raise the ribcage and the internal intercostal muscles lower the ribcage. 14 The external intercostals lie deep to the internal intercostals. FILL IN THE BLANK STRUCTURE 1 The lumen of the trachea is lined with 2 The trachea divides into two 3 There are lobes and segments in the left lung; lobes and segments in the right lung 4 The are composed solely of smooth muscle and mucous membrane 5 The respiratory bronchioles open into 6 Gas exchange between oxygen and carbon dioxide takes places in the