Respiratory System 10, Cilia and airway protection

Описание: Once you have watched the video, please answer these MCQs
Cilia and airway protection

Which of the following statements is false?
a. ciliated cells contain large numbers of mitochondria
b. mucus produced in the nasal cavities is moved by mucociliary clearance mechanisms towards the oropharynx
c. parasympathetic stimulation of the bronchioles will cause bronchodilation
d. sympathetic stimulation of the bronchioles will cause bronchodilation

Which of the following statements is true?
a. the trachea is posterior to the oesophagus
b. olfactory receptors are located in the oropharynx
c. the larynx is mostly composed of smooth muscle
d. all air going in and out of the lungs must pass through the laryngopharynx

Which of the following statements is true about pseudostratified columnar epithelium?
a. the upper layer of cells do not have any contact with the basement membrane
b. only occurs in the respiratory bronchioles and alveoli
c. contains keratin
d. is usually ciliated in the conducting airways

The nerve which transmits the sense of smell is the
a. optic
b. vagus
c. olfactory
d. glossopharyngeal

Which form of cell produces mucus?
a. ciliated pseudostratified columnar epithelium
b. macrophages
c. goblet cells
d. squamous epithelial cells