Straighterline Anatomy and Physiology 2 Lab BIO202L Lab 13 The Respiratory System Worksheet 2023

1. Name two functions of the nasal cavity mucosa.” The nasal cavity mucosa serves as a protective barrier, trapping and filtering airborne particles and pathogens, preventing them from entering the respiratory system. It also plays a role in humidifying and warming the inhaled air, preparing it for the delicate structures of the respiratory tract. ”2. Why is the trachea reinforced with cartilaginous rings? ” The trachea is reinforced with cartilaginous rings to maintain its shape and prevent collapse during breathing, ensuring a continuous and unobstructed airflow to the lungs. ”3. Describe the path a molecule of oxygen takes to get to body tissue, starting with the nares. ” After entering through the nares (nostrils), a molecule of oxygen travels through the nasal cavity, where it is filtered, warmed, and humidified by the nasal mucosa. Next, it moves down the trachea, through the bronchi, and into the smaller bronchioles, eventually reaching the alveoli in the lungs where gas exchange occurs, allowing oxygen to diffuse into the bloodstream and be transported to body tissues via the circulatory system. ”4. What is asthma? ”