NUR 612 Module 3 Respiratory Exam Questions and Correct Answers

ype conducting airway air moves through as it passes between the atmosphere and the lungs - move air into the lungs (nasopharynx, oropharynx, epiglottis, larynx, trachea, intra/extra pulmonary bronchus) - warm and humidify air - trap inhaled particles Respiratory tissues of the lungs where gas exchange takes place - bronchioles - alveoli - gas is exchanged with the blood Type 1 alveolar cells flat squamous epithelial cells where gas exchange occurs Type 2 alveolar cells produce surfactant which decreases surface tension in the alveoli and allows for greater ease of lung inflation. Pulmonary circulation arises from the pulmonary artery and provides for the gas exchange function of the lungs Bronchial circulation arises from the thoracic aorta and supplies the lungs and other lung structures with oxygen. Distributes blood to the conducting airways to warm and humidify incoming air. Intrapulmonary pressure pressure inside the airway and alveoli of the lung Intrapleural pressure pressure in the pleural cavity Intrathoracic pressure pressure in the thoracic cavity 760 mmhg atmospheric pressure at sea level and all respiratory pressures Lung compliance a change in lung volume that can be accomplished with. A given change in respiratory pressure Airway resistance •the volume of air that moves into and out of the air exchange portion of the lungs •directly related to the pressure difference between the lungs and the atmosphere (will change at different altitudes) •inversely related to the resistance the air encounters as it moves through the airways Tidal volume amount of air that moves in and out of the lungs during a normal breath