Medical Quiz
Respiratory System Quiz

How long is the trachea?

A. 6 to 8 inches long

B. 4 to 5 inches long

C. 9 to 11 inches long

D. 1 to 3 inches long

Select your answer:
A  B  C  D  E 

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Other quiz: The Nervous System

Which part of the nervous system carries communication signals around the body?

A. Brain

B. Nerves

C. Spinal cord

D. Blood vessels