The Correct Answer is {"dropdown-group-1":"C"}
A. Diaphragmatic: Diaphragmatic breathing, or abdominal breathing, primarily involves the contraction of the diaphragm, which moves the abdominal wall outward during inspiration. It is deeper and more efficient for ventilation, rather than shallow, and does not rely on rib cage movement for air intake.
B. Eupneic: Eupneic breathing refers to normal, relaxed breathing at rest. It involves both the diaphragm and intercostal muscles but is not specifically characterized by shallow or rib cage–dependent patterns; it represents regular tidal ventilation.
C. Costal: Costal breathing, also called shallow breathing, relies on the elevation and depression of the ribs to move air in and out of the lungs. This pattern is less efficient than diaphragmatic breathing and typically occurs when the rib cage shape or movement predominates, such as during rapid, shallow respirations or certain respiratory conditions.
D. Forced: Forced breathing involves active inspiration and expiration using both primary and accessory muscles to move larger volumes of air, such as during exercise or coughing. It is deep and vigorous, contrasting with the shallow nature of costal breathing.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Correct answer: True
Ventilation-perfusion (V/Q) matching is essential for efficient gas exchange in the lungs. Factors such as gravity influence blood flow, causing more perfusion in the lower lung regions compared with the upper regions, while ventilation may not perfectly match. Blocked alveolar ducts, as seen in mucus plugs or obstructive conditions, prevent air from reaching alveoli, creating areas of low ventilation relative to perfusion. Diseases such as pneumonia, pulmonary embolism, or chronic obstructive pulmonary disease can further disrupt the balance, leading to hypoxemia. Therefore, these factors collectively demonstrate how ventilation-perfusion mismatch can occur.
Correct Answer is A
Explanation
A. Vestibular fold: The vestibular folds, also known as the false vocal cords, are located within the larynx and function primarily in airway protection and resonance rather than as part of the pharynx. They are anatomically part of the laryngeal structure, not the pharyngeal cavity, distinguishing them from the other listed structures.
B. Oropharynx: The oropharynx is the middle portion of the pharynx, extending from the soft palate to the level of the epiglottis. It serves as a shared pathway for both air and food, participating in respiration and swallowing. It is anatomically grouped within the pharyngeal divisions.
C. Laryngopharynx: The laryngopharynx, also called the hypopharynx, is the inferior portion of the pharynx that directs food toward the esophagus and air toward the larynx. It is part of the continuous muscular tube of the pharynx.
D. Pharyngotympanic tube opening: The pharyngotympanic (Eustachian) tube opening is located in the nasopharynx and allows pressure equalization between the middle ear and the external environment. It is structurally associated with the pharynx and contributes to its anatomical grouping.
E. Nasopharynx: The nasopharynx is the superior portion of the pharynx located posterior to the nasal cavity. It functions exclusively in air conduction and contains structures such as the pharyngeal tonsil and the opening of the pharyngotympanic tube, clearly placing it within the pharyngeal group.
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