Respiratory System Exam Study set-Questions and Answers Graded A+

Respiratory System Exam Study set-Questions and Answers Graded A+ Define respiration - ANSWER-gas exchange between the blood and cells Tidal volume is the volume of air inspired and expired during one ______________ - ANSWER-breath Define phlegm - ANSWER-thick mucus secreted by the respiratory lining External respiration takes place - ANSWER-in the lungs What forms the floor of the nose? - ANSWER-hard palate What happens to increased amounts of mucous produced in the trachea? - ANSWER-it is coughed up What type of epithelium lines the upper portion of the respiratory system and plays an important role in the body's defense mechanism? - ANSWER-Pseudostratified ciliated columnar epithelium What part of the lung lies directly on the diaphragm? - ANSWER-base What is the partial pressure of carbon dioxide in the blood? - ANSWER-46 mm Hg The main tubular structure in the neck region that carries air to and from the lungs is the - ANSWER-trachea Define Visceral pleura - ANSWER-epithelial membrane covering the outer surface of the lungs The three main condition functions of the nasal passages are - ANSWER-warming, humidifying, and filtering air. Select the term that best defines epithelial membrane covering the outer surface of the lungs - ANSWER-Visceral pleura Define external respiration - ANSWER-absorption of o2 by lungs, diffusion of co2 to atmospheric air On inspiration the pressure in the thoracic cavity, as compared with ambient air pressure, is - ANSWER-negative Most conditioning of inspired air occurs in the - ANSWER-nasal passages Select the term that best defines rings of cartilage that provide structural support to the trachea and bronchi - ANSWER-Tracheal rings Blood entering the lungs from the heart is dark because of - ANSWER-the high carbon dioxide content.