Final answer:
The trachea is the structure that connects the larynx to the primary bronchi, facilitating the passage of air into the lungs.
Step-by-step explanation:
The structure that connects the larynx to the primary bronchi is the trachea. Air inhaled through the pharynx passes through the trachea before reaching the bronchi. The trachea, often referred to as the windpipe, is a tube that constitutes part of the lower respiratory tract, supported by C-shaped rings of cartilage which prevent its collapse and is lined with pseudostratified ciliated columnar epithelium for trapping debris and pathogens. Once the trachea splits at the carina, it forms the right and left primary bronchi, which then enter the lungs at the hilum and continue to branch into the bronchial tree.
The structure that connects the larynx to the primary bronchi is the trachea. The trachea is a tube-like structure that extends from the larynx to the bronchi, allowing air to pass through it during inhalation and exhalation. It is located in the lower part of the respiratory tract and is lined with ciliated epithelial cells and cartilage rings to support its structure.