NU 606: Exam 1 Questions with Verified Answers| Latest 2024/2025 - Regis

NU 606: Exam 1 Questions with Verified Answers. What are the alterations in lung volumes seen in restrictive lung disease? ️ Decreased FRC, Decreased TLC, Decreased FVC What is the primary function of the pulmonary system? ️ Exchange of gases in the environment and in the blood. What are the 3 steps involved in the pulmonary system? ️ Ventilation, Diffusion, and Perfusion. What is ventilation? ️ Movement of air into and out of the lungs. What is diffusion? ️ Movement of gases between the air spaces in the lungs and the bloodstream. What is perfusion? ️ Movement of blood into and out of capillary beds of the lungs to the body organs and tissues. What structures are included in the pulmonary system? ️ 2 lungs, upper and lower airways, and the blood vessels that serve them; the chest wall (thoracic cage) and the diaphragm. What is the function of the cilia mucosa in the upper airways? ️ To warm, humidify, and remove foreign particles from the air. What happens when someone breathes through their mouth instead of their nose? ️ The warming, humidifying, and particle removal functions of the upper airways are less effective. What happens to the internal muscles of the larynx during swallowing? ️ They contract to prevent aspiration into the trachea and contribute to the pitch of a person's voice. What is the mediastinum? ️ The space between the lungs that contains the heart, great vessels, and esophagus. What connects the larynx to the bronchi? ️ The trachea. Why do aspirated particles typically enter the right lung rather than the left? ️ Because the right lung is slightly larger and wider. What do the bronchi branch into? ️ Bronchioles. How many lobes are in the right lung? ️ 3 (upper, middle, lower). How many lobes are in the left lung? ️ 2 (upper, lower). How are the lungs protected? ️ By a series of mechanical and cellular defenses. Why are the lungs not sterile? ️ There are microbes that survive in the lungs environment and make up the lung microbiome.