The dermis is the deeper and more complex of the two skin layers. Letter ______ designates this layer. 

________ The sediment is the solid material remaining in urine after the supernatant is poured off

Indicate whether the statement is true or false

Which of the following are clinical signs and symptoms of inadequate airway humidification? 1. Atelectasis 2. Dry cough 3. Increased airway resistance 4. Increased incidence of infection 5. Increased work of breathing

a. 2, 3, and 4 only b. 1, 2, and 3 only c. 3, 4, and 5 only d. 1, 2, 3, 4, and 5