What is the function of an artificial airway?

Correct Answer: B

Rationale: The correct answer is B because the function of an artificial airway is to keep the airway open for the lungs to perform air exchange. This is crucial for maintaining oxygenation and ventilation in individuals who have difficulty breathing on their own. Choice A is incorrect because feeding tubes are used for feeding, not for maintaining airways. Choice C is incorrect as checking vital signs does not require an artificial airway. Choice D is incorrect as preparing for a medical test does not involve the use of an artificial airway.

Correct Answer: C

Rationale: Step 1: A living will is a legal document that outlines a person's preferences for medical treatment in case they are unable to communicate their wishes. Step 2: Choice C states that a living will states the medical care a resident wants or does not want if they become unable to make decisions, which aligns with the definition. Step 3: Choice A is incorrect because a living will does not pertain to the distribution of a large estate upon death. Step 4: Choice B is incorrect as a living will is not related to a resident's inheritance wishes but rather their medical care preferences. Step 5: Choice D is incorrect as a living will does not address financial affairs but focuses solely on medical treatment preferences. Summary: The correct answer, Choice C, accurately describes the purpose of a living will in outlining medical care preferences, making it distinct from the other choices that are unrelated to its intended use.

Correct Answer: D

Rationale: The correct answer is D: Tachy in tachycardia. A prefix is a group of letters attached to the beginning of a word to change its meaning. In this case, "tachy-" means fast or rapid. In tachycardia, "tachy-" is added to "cardia" to indicate a fast heart rate. Choices A, B, and C all contain word parts, but they are not prefixes. "Scope," "logy," and "ostomy" are all word roots or suffixes, as they do not change the meaning of the word when attached to other words.

Correct Answer: A

Rationale: The correct answer is A: Social development. School-age children's development includes forming relationships, understanding social norms, and developing communication skills. This is crucial for their emotional well-being and success in school. Pregnancy (B) is not relevant to school-age children. Learning to walk correctly (C) is typically achieved during infancy. Controlling bowels and bladders (D) is part of early childhood development, not specific to school-age children. Thus, A is the correct answer.

Correct Answer: D

Rationale: The correct answer is D: Vaccine. A vaccine is specifically designed to produce immunity to a particular disease by stimulating the body's immune system to recognize and respond to the disease-causing agent. Vaccines contain weakened or inactivated forms of the pathogen, allowing the immune system to develop memory cells for future protection. Rationale: A: Vesicle is a small blister-like structure and is not used to produce immunity. B: Vector is an organism that transmits a pathogen but is not directly involved in producing immunity. C: Vacuum is a space entirely devoid of matter and is not related to immunity or disease prevention.