What is the major source of respiratory tract secretions in the normal lung?
a. Bronchial glands
b. Clara cells
c. Goblet cells
d. Mast cells
ANS: A
Normally, the respiratory tract produces approximately 100 ml of mucus per day. Most of the mucus formed in the larger airways is produced by the bronchial glands.
You might also like to view...
60 gm of a compounded ointment contains 500 mg of neomycin sulfate. What is the final concentration (w/w)?
A) 0.83% B) 8.3% C) 83% D) 83.3%
TRICARE Standard and TRICARE Extra are available to beneficiaries throughout the United States and overseas
Indicate whether this statement is true or false.
A patient has a platelet count of 650 ยด 109/L. The other hematology tests are normal. No evidence of hemostasis failure exists. Which of the following is most likely?
a. Reactive thrombocytosis b. Essential thrombocythemia c. DIC d. Polycythemia vera
An asthma patient presents with symptoms of decreased breath sounds with no wheezing, and a PaCO2 of 54 mmHg. What is the likely diagnosis?
A) acute respiratory distress syndrome (ARDS) B) respiratory failure C) bronchiolitisD) cystic fibrosis