MBS 603 Module 3 - Respiratory Physiology

Which of the following structures of the human respiratory system is considered part of the respiratory zone?

Alveolar Ducts

Which statement best describes the blood supply (vascularization) of the airway walls?

It is highly dense to warm and humidify incoming air.

What is the primary function of ciliated cells in the respiratory epithelium?

Sweeping trapped particles upward toward the pharynx

Which cell type is responsible for producing and secreting mucus into the airways?

Goblet cells

What role does the NA-K-2Cl (NKCC) cotransporter play in airway saline secretion?

It moves chloride from the extracellular fluid into the epithelial cell.

In the mechanism of airway saline secretion, chloride movement into the lumen creates an electrical gradient that draws which ion paracellulary?

Sodium (Na+)