Which of the following areas of the respiratory tract is lined with a single layer of epithelial cells?

A) Nasal cavity
B) Larynx
C) Trachea
D) Bronchi
E) Alveoli

Epithelial Cells

Epithelial cells make up the epithelium, a layer of cells that covers the surfaces and cavities of organs and structures throughout the body, providing protection, secretion, and absorption.

Nasal Cavity

The large air-filled space behind the nose involved in breathing and olfaction, lined with mucosa that filters, moistens, and warms incoming air.

Bronchi

The major air passages of the lungs that diverge from the windpipe, providing a pathway for air to reach the lungs.