Flashcards in Chapter 22 Practice test Deck (39)
Where does external respiration take place?
between oxygen in alveoli and the capillaries in the lungs
ithin what respiratory structure does the epithelium change from stratified squamous to pseudostratified ciliated columnar?
Central chemoreceptors are located in the __________.
reticular formation of the medulla oblongata
__________ is a slippery substance secreted in the lungs that reduces surface tension and prevents collapse of the alveoli
__________ tonsils are located in the nasopharynx.
The __________ is a cartilaginous flap that prevents food or liquid from going into the lower respiratory tubes.
What are the roles of the peripheral chemoreceptors of the respiratory system? (Click on all correct answers for full credit.)
They sense falling concentrations of O2 or rising levels of CO2. They signal the respiratory center to increase the rate and depth of
breathing when the blood is too acidic.
What is the function of type II alveolar cells?
to secrete surfactant
In blowing out a candle, which respiratory muscles would you be using?
primarily the external and internal oblique muscles and the
The __________ lifts superiorly to close off the nasopharynx.
The smallest subdivision of the lung that can be seen with the unaided eye is the __________.
__________ are the main sites of gas exchange.
The nasopharynx and larynx serve as passageways for __________.
The __________ are the most important of the three small cartilages just superior to the cricoid cartilage, because they anchor the vocal folds.
respond to inhaled antigens; located in nasopharynx and oropharynx
air passageway; prevents food from entering lower respiratory tract; involved in voice production
produce lubricating fluid and compartmentalize the thoracic cavity
small air chambers; walls consist of simple squamous epithelium.
air passageway; continuous with the nasal cavity through the posterior nasal apertures; epithelium is pseudostratified ciliated columnar
branch from the trachea at the level of T7 in living individuals; run obliquely through the mediastinum
Your patient recently had surgery on his aortic arch. Since then, he has experienced a hoarse voice. What can you tell him about why he sounds like he has a sore throat?
During the surgery, surgeons may have damaged his left recurrent laryngeal nerve.
The medial opening between the right and left vocal folds is called the __________.
Which of the following is true of pleurisy?
The pain of pleurisy originates from the parietal pleura only.
What is the role of alveolar macrophages in the lungs?
removal of tiny inhaled particles
Which structures are important for shaping sounds into recognizable consonants and vowels?
pharynx, tongue, soft palate, and lips
collapse of a lung from airway obstruction or pleural effusion
viral-induced inflammation that causes the air passageways to narrow; characterized by a cough that sounds like a barking dog
respiratory infection caused by a new coronavirus; infections jumped from animal hosts to humans; identified in spring 2003
severe acute respiratory distress syndrome (SARS)
characterized by permanent enlargement of the alveoli caused by deterioration of the alveolar walls; related to smoking