The tracheal wall does NOT contain the ()
A. tunica mucosa
B. tunica submucosa
C. tunica muscularis
D. tunica adventitia
E. Glands
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A respiratory bronchiole ()
A. It allows gas exchange to occur within it
B. It has no smooth muscle in its wall
C. It branches to form terminal bronchioles
D. It only has few cartilage masses
E. It still has mixed glands
The main characteristic of type II alveolar cells in EM is ()
A. numerous surface microvilli
B. abundant mitochondria
C. a number of lysosomes
D. many lamellar bodies
E. rich in RER
Surfactant is secreted by ()
A. type I alveolar cells
B. type II alveolar cells
C. dust cells
D. fibroblasts
E. pulmonary endocrine cells
Which is wrong about hepatocyte? ()
A. The synthesis of bile is related with RERs
B. The hepatocyte is polyhedron
C. The excretion of bile is related with Golgi complex
D. The microbody participates to detoxication
E. The cytoplasm of hepatocyte is abundant, containing lots of glycogen granules
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