The trachea and mainstem bronchi:
A) constrict violently when their beta-2 receptors are stimulated excessively.
B) are approximately 10 to 12 cm in length and are joined together at the hilum.
C) do not contain mucous-producing cells in patients without a respiratory disease.
D) are lined with beta-2 receptors that result in bronchodilation when stimulated.
Answer: D) are lined with beta-2 receptors that result in bronchodilation when stimulated.
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Fill in the blank(s) with the appropriate word(s).
Supraorbital margins with thick, rounded, blunt borders are characteristic of female skulls
Indicate whether this statement is true or false.
Most people retain adequate kidney function in old age. Why?
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Which of these features is found in a lumbar vertebra?
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