ANATOMY

Detailed explanation-1: -Hence, epithelium of the internal lining of the larynx, trachea, and bronchi, as well as that of the lungs, is entirely of endodermal origin. The cartilaginous, muscular, and connective tissue components of the trachea and lungs are derived from splanchnic mesoderm surrounding the foregut.

Detailed explanation-2: -The majority of the respiratory tree, from the nasal cavity to the bronchi, is lined by pseudostratified columnar ciliated epithelium.

Detailed explanation-3: -The respiratory system (the trachea, bronchi, and alveoli of the lungs) is derived from the germ layer endoderm.

Detailed explanation-4: -The conducting passageways of the respiratory system (nasal cavity, trachea, bronchi and bronchioles) are lined by pseudostratified columnar epithelial tissue, which is ciliated and which includes mucus-secreting goblet cells.

Detailed explanation-5: -Beneath the vocal cords, the larynx is lined by pseudostratified ciliated columnar epithelium, with a transition zone of stratified columnar epithelium.