Gas exchange occurs in which of the following structures?
bronchi
alveoli
nasal passages
larynx
The Correct Answer is B
B. The alveoli are tiny air sacs within the lungs where gas exchange occurs. Oxygen from inhaled air diffuses across the thin walls of the alveoli into the bloodstream, while carbon dioxide moves from the bloodstream into the alveoli to be exhaled.
A. The bronchi are the main airways that branch off from the trachea and lead to the lungs. While the bronchi play a crucial role in conducting air to and from the lungs, gas exchange does not occur in the bronchi themselves.
C. The nasal passages, also known as the nostrils or nares, are the passages through which air enters the respiratory system. While the nasal passages warm, humidify, and filter the air as it enters the body, gas exchange does not occur in this area.
D. The larynx, or voice box, is located at the top of the trachea and is involved in breathing, swallowing, and vocalization. However, gas exchange does not occur in the larynx.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Chocolate contains caffeine and cocoa, both of which can relax the lower esophageal sphincter (LES) and increase the risk of acid reflux. Additionally, chocolate is high in fat, which can further exacerbate symptoms of GERD. Therefore, chocolate is often recommended to be avoided by individuals with GERD.
B. Oatmeal is generally considered a bland and low-acid food that is unlikely to trigger symptoms of GERD. In fact, oatmeal is often recommended as part of a GERD-friendly diet due to its high fiber content, which can help absorb stomach acid and promote digestive health.
C. Apples are generally considered to be low in acid and high in fiber, making them a relatively safe fruit choice for individuals with GERD. However, some individuals may find that certain varieties of apples or apple products (such as apple juice) can exacerbate their GERD symptoms.
D. Nonfat milk is generally considered to be a low-fat and low-acid beverage that is unlikely to trigger symptoms of GERD. However, some individuals may find that consuming dairy products, including milk, can exacerbate their GERD symptoms.
Correct Answer is A
Explanation
A. Lean proteins like baked turkey breast are generally well-tolerated by individuals with GERD. Turkey is low in fat, which reduces the likelihood of triggering reflux symptoms.
B. Spaghetti with red sauce can be problematic for individuals with GERD due to the acidity of the tomato sauce, which can exacerbate reflux symptoms. Tomato-based foods are often best avoided or consumed in moderation by those with GERD.
C. Corned beef brisket is high in fat, which can increase the risk of reflux symptoms. Fatty foods, especially those high in saturated fat like corned beef, are known triggers for GERD.
D. Citrus flavors, including lemon, can trigger reflux symptoms in some individuals. However, if the dish is prepared with a small amount of lemon pepper seasoning and does not cause symptoms for the individual, it may be acceptable.
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