Biology STAAR Practice Test 2025 - Free State of Texas Assessments of Academic Readiness Practice Questions and Study Guide

Question: 1 / 400

Which structure connects the throat to the lungs?

Diaphragm

Bronchial tubes

Trachea

The trachea is the structure that connects the throat to the lungs. Often referred to as the windpipe, it functions as a vital airway, allowing air to travel from the larynx (located in the throat) down into the lungs. The trachea branches into the bronchial tubes, which extend into each lung, leading to smaller passages that further distribute air for gas exchange. This process is crucial for respiration, as it ensures that oxygen enters the lungs and carbon dioxide is expelled.

Understanding the role of the trachea is essential in grasping how the respiratory system operates as a whole, emphasizing the importance of its structural position linking the upper and lower respiratory tracts.

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