Trachea are bronchi have
a) C – shaped cartilaginous rings
b) Complete cartilaginous rings
c) Complete chitinous rings
d) C – shaped chitinous rings
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4
Answer:
Revolutions of 1848, series of republican revolts against European monarchies, beginning in Sicily and spreading to France, Germany, Italy, and the Austrian Empire. They all ended in failure and repression and were followed by widespread disillusionment among liberals.
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Answer:
a) C – shaped cartilaginous rings
Explanation:
The cartilage ring is C-shaped because trachea presses against the oesophagus. It prevents the trachea from collapsing during breath in and out. In humans, there are about 15 to 20 incomplete C-shaped cartilaginous rings.
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