WGU D115 PATHO, UNIT 4-PULMONARY SYSTEM 2025 EXAM QUWSTIONS AND 100% APPROVED CORRECT ANSWERS FIRST CLASS PASS

WGU D115 PATHO, UNIT 4-PULMONARY SYSTEM 2025 EXAM QUWSTIONS AND 100% APPROVED CORRECT ANSWERS FIRST CLASS PASS 2025 EXAM  WGU D115 PATHO, UNIT 4-PULMONARY SYSTEM 2025 EXAM QUWSTIONS AND 100% APPROVED CORRECT ANSWERS FIRST CLASS PASS Alveoli - CORRECT ANSWER tiny sacs of lung tissue specialized for the movement of gases between air and blood Functions of the pulmonary system - CORRECT ANSWER ventilate alveoil, diffuse gases in and out of blood, perfuse the lungs so that the organs and tissues of the body receive blood that is rich in O2 and low in CO2. (Through ventilation, diffusion and perfusion) Ventilation - CORRECT ANSWER Mechanical movement of air in and out of the lungs, not the same as respiration's Respiration - CORRECT ANSWER Exchange of O2 and CO2 during cellular metabolism pulmonary function tests (PFTs) - CORRECT ANSWER tests that measure the ventilation mechanics of the lungs: airway function, lung volume, and the capacity of the lungs to exchange oxygen and carbon dioxide efficiently Types of pulmonary function tests - CORRECT ANSWER Simple spirometry Pulmonary diffusing capacity Residual volume Oximetry Capnography Functional reserve capacity (FRC) Total lung capacity Arterial blood gas analysis Thoracic imaging hypercapnia - CORRECT ANSWER excessive carbon dioxide in arterial blood hypoxemia - CORRECT ANSWER deficient amount of oxygen of arterial blood, alveoli may be ventilated but not perfused Kussmaul respirations - CORRECT ANSWER Deep, rapid breathing; usually the result of an accumulation of certain acids when insulin is not available in the body. Cheyne-Stokes respiration - CORRECT ANSWER pattern of breathing characterized by a gradual increase of depth and sometimes rate to a maximum level, followed by a decrease, resulting in apnea spirometry - CORRECT ANSWER Measures volume and flow of air inhaled and exhaled, plotted against time during difficult breathing maneuvers, normal is 80% in 1 second Aging and the Pulmonary System - CORRECT ANSWER Loss of elastic recoil Stiffening of the chest wall Alterations in gas exchange Increases in flow resistance Decreased exercise tolerance Alveoli lose wall tissue and capillaries Decrease PaO2 and ventilators reserve pulmonary circulation - CORRECT ANSWER flow of blood from the heart to the lungs and back to the heart bronchial circulation - CORRECT ANSWER systemic circulation, delivers blood to and from the bronchi and bronchioles arterial blood gases (ABGs) analyze - CORRECT ANSWER pH 7.35-7.45 O2 96-98% PCO2 35-45 mmHg clubbing - CORRECT ANSWER bulbous enlargement of distal phalanges of fingers and toes that occurs with chronic cyanotic heart and lung conditions, graded 1-5 based in extent of nail hypertrophy ventilation-perfusion mismatch - CORRECT ANSWER occurs in conditions during which either the flow of oxygen is limited in the alveoli or the circulation through the pulmonary capillary is compromised, most common cause of hypoxemia