The linea aspera is a ridge of bone running longitudinally on the middle third of the anterior femur

During administration of a continuous positive airway pressure flow mask to a patient with ate-lectasis, you find it difficult to maintain the prescribed airway pressure. Which of the following is the most common explanation?

a. System or mask leaks b. Outflow obstruction c. Inadequate system flow d. Inadequate trigger

While the maxillary sinus appears radiolucent on a radiograph, the maxillary sinus walls appear radiopaque

Indicate whether the statement is true or false