Correct option is C
The correct answer is (c)
Bronchiole. Cartilage is a flexible connective tissue found in various parts of the human body, such as the
nose,
trachea, and
knee joint. However,
bronchioles, which are smaller airways within the lungs, do
not contain cartilage. They are composed primarily of smooth muscle and epithelial cells, which allow them to constrict and dilate, aiding in the regulation of airflow.
Information Booster:
Cartilage is present in larger airways such as the trachea and bronchi to provide structural support and maintain an open airway. In the
nose, cartilage provides shape and flexibility, allowing for the movement and support of the nasal structure. The
knee joint contains cartilage, specifically
articular cartilage, which reduces friction and absorbs shock between bones during movement.
Bronchioles, being smaller branches of the respiratory system, rely on smooth muscle rather than cartilage for flexibility and movement.