Question

multiple choice question
the mucous membrane of the respiratory tract is composed of ______ and is ciliated in most portions of the conducting zone.
o fibrous connective tissue
o nervous tissue
o epithelial tissue
o smooth muscle tissue

Explanation:

The respiratory tract's mucous membrane is composed of epithelial tissue. Epithelial tissue forms linings and coverings. In the respiratory tract, the ciliated pseudostratified columnar epithelium (a type of epithelial tissue) in the conducting zone helps in trapping and moving mucus (with foreign particles) out of the respiratory system. Fibrous connective tissue is more about providing structural support (like in tendons, ligaments). Nervous tissue is for transmitting electrical impulses. Smooth muscle tissue is for involuntary muscle contractions (like in the walls of hollow organs, but not the main component of the mucous membrane of the respiratory tract's conducting zone).

Answer:

epithelial tissue