Final answer:
Cartilage is a connective tissue that provides support and flexibility to body structures. Rings of cartilage, such as the tracheal rings, prevent collapse and help hold structures open. Examples include the trachea, bronchial tubes, and larynx.
Step-by-step explanation:
Cartilage is a type of connective tissue that supports and provides flexibility to various body structures. Rings of cartilage, such as the tracheal rings in the respiratory system, help hold open and prevent the collapse of certain structures.
For example, the tracheal rings keep the trachea open, allowing air to pass through without obstruction. Similarly, the rings of cartilage in the bronchial tubes and the larynx also help maintain their shape and prevent collapse.