Final answer:
5. bronchioles The nose, larynx, trachea, and bronchi are supported by cartilage, whereas bronchioles and alveolar sacs are not.
Step-by-step explanation:
The respiratory structures in the human body that are supported by cartilage include the nose, larynx, trachea, and bronchi. Whereas the bronchioles and alveolar sacs do not contain cartilaginous support. The nasal cavity contains several structures made of bone and cartilage that warm, moisturize, and filter the air we breathe. The larynx, commonly known as the voice box, is supported by a framework of cartilage that protects the vocal cords. The trachea, or windpipe, is a flexible tube reinforced with C-shaped rings of cartilage, which prevents it from collapsing as air moves in and out of the lungs. Finally, the bronchi are the large air passages that lead from the trachea into the lungs and also contain cartilaginous support for maintaining an open passage for air.
The respiratory structures that are supported by cartilage include the nose, larynx, trachea, and bronchi. The nose acts as the primary entrance for air, and it contains several cartilaginous structures that help maintain its shape and structure. The larynx, also known as the voice box, contains cartilage that protects the vocal cords. The trachea, or windpipe, is a cartilaginous tube that connects the larynx to the bronchi. Finally, the bronchi, which branch out from the trachea, are also supported by cartilaginous rings.