Where does cartilage occur in an embryo?

In an embryo, cartilage primarily occurs in several key areas, including the developing skeleton, where it serves as a precursor to bone formation. It is found in structures such as the trachea, bronchi, and the nasal passages, providing support and flexibility. Additionally, cartilage plays a crucial role in the formation of joints and serves as a template for the growth of long bones through endochondral ossification.