Which of the following is true about the paranasal sinuses?
A. They serve as structures for air to be warmed & humidified.
B. They increase the weight of the skull.
C. There are a total of 5 paranasal sinuses.
D. They are named after the cartilage that it is made of.
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Other quiz: Integumentary System
Gland in the dermis that produces sweat.