Which of the following structures separates the lung into lobes?
A. mediastinum
B. Fissure
C. Root
D. pleura
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Each lung is divided into specific segments called_____.
A. Lobes
B. Fissures
C. Pleura
D. bronchi
How many lobes are in the left lung?
A. 1
B. 2
C. 3
D. 4
What structure separates the thoracic cavity from the abdominal cavity?
Aortic arch
B. Mediastinum
C. Diaphragm
D. Chest wall
After a film is exposed, the target-film distance is doubled. The exposure time necessary to obtain a second film of equal density to the first film is
A. Same as first film
B. Two-fold
C. Three-fold
D. Four-fold