In which part or organ of human body cartilage is NOT found ?

Cartilage is a flexible connective tissue that provides structural support and cushioning in the human body. It is present in the Nose (giving it shape), the Trachea (where C-shaped rings prevent airway collapse), and the Knee joint (where articular cartilage reduces friction between bones).

The Bronchioles are the smaller branches of the respiratory system that lead to the alveoli. Unlike the trachea and the larger bronchi, bronchioles do not contain cartilage. Instead, their walls are composed of smooth muscle and elastic fibers, which allow them to constrict or dilate to regulate airflow. As the respiratory passages narrow, the cartilaginous support found in the upper airways gradually disappears, making the bronchioles the point where cartilage is absent. Therefore, Option C is correct.