Gas exchange occurs in which of the following structures?

bronchi

alveoli

nasal passages

larynx

Answer and Explanation

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.

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Free Nursing Study Resources

Correct Answer is ["B","C","D","E"]

Explanation

B. Beta-blocking medications, such as propranolol and metoprolol, can worsen asthma symptoms in some individuals by constricting the airways. Patients with asthma should avoid or use caution with beta-blockers, especially non-selective ones, as they can trigger or exacerbate asthma attacks.
C. Exposure to secondhand smoke is a well-established trigger for asthma symptoms and can exacerbate respiratory inflammation and airway hyperresponsiveness. Patients with asthma should avoid exposure to secondhand smoke whenever possible to reduce the risk of asthma exacerbations.
D. Carpeting and drapes can harbor dust mites, pet dander, and other allergens that can trigger asthma symptoms in susceptible individuals. Patients with asthma may benefit from removing carpeting and minimizing soft furnishings in the bedroom to reduce exposure to allergens and improve air quality.
E. Pets, particularly those with fur or feathers, can be potent allergens for individuals with asthma. Patients with asthma should consider removing pets from the home or at least keeping them out of the bedroom to minimize exposure to pet dander.
A. Cardiovascular exercise can trigger asthma symptoms in some individuals but it is not typically recommended to eliminate exercise altogether. Instead, patients with asthma should be encouraged to engage in physical activities that are well-tolerated and to use appropriate preventive measures, such as pre-exercise bronchodilator therapy and warm-up exercises, to minimize symptoms.

A. "This medication adheres to the ulcer and protects it from gastric acid." B. "This medication prevents gastric acid secretion in the stomach." C. "This medication neutralizes gastric acid after it is secreted." D. This medication kills the bacteria which cause ulcers."

Correct Answer is A

Explanation

A. Sucralfate works by forming a protective barrier over the ulcer site. It adheres to the ulcer, shielding it from the harmful effects of gastric acid, pepsin, and bile salts. This protection allows the ulcer to heal by preventing further irritation and damage.
B. Medications that prevent gastric acid secretion are typically proton pump inhibitors (PPIs) or H2 receptor antagonists. Sucralfate does not reduce or inhibit the production of gastric acid; instead, it protects the ulcer from the acid already present.
C. Antacids are the type of medication that neutralize gastric acid. Sucralfate does not neutralize acid; it acts locally at the ulcer site to create a protective coating.
D. Antibiotics are used to kill Helicobacter pylori, the bacteria often responsible for causing peptic ulcers. Sucralfate does not have antibacterial properties and does not target or eliminate bacteria.

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Gas exchange occurs in which of the following structures?

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Naxlex Comprehensive Predictor Exams

Management of asthma involves avoidance of triggers. Which environmental triggers will the nurse suggest the patient eliminate? Select all that apply. (Select All that Apply.)

Correct Answer is ["B","C","D","E"]

Explanation

A nurse is reinforcing teaching for a client who has a duodenal ulcer and a new prescription for sucralfate. The client asks the nurse how sucralfate works. Which of the following statements should the nurse make?

Correct Answer is A

Explanation

The nurse is teaching a patient recently diagnosed with type 1 diabetes mellitus (DM) about the disease. What information should the nurse include?

The nurse is caring for a patient with pneumonia. Which lab abnormality is most concerning?

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A newly diagnosed patient asks the nurse to explain asthma. Which of the following explanations by the nurse is correct?

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A nurse is reviewing the medical record of a client who has a peptic ulcer. Which of the following findings should the nurse identify as a risk factor for this condition?

The nurse knows a patient with type 1 diabetes needs more education when the patient makes which of the following statements?

The nurse is caring for a patient admitted with COPD, who is having difficulty breathing. Which actions can the nurse take to provide support? Select all that apply