Which muscle is the main flexor of the forearm?

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Question 1 of 5

Which muscle is the main flexor of the forearm?

Correct Answer: C

Rationale: The correct answer is C: Brachialis. The brachialis muscle is the main flexor of the forearm as it lies deep to the biceps brachii and directly acts on the ulna to flex the elbow joint. It is responsible for flexing the forearm regardless of the position of the hand. The other choices are incorrect because: A. Anconeus is a small muscle involved in extension of the elbow, not flexion. B. Biceps brachii is a powerful supinator of the forearm and also assists in flexion, but it is not the main flexor. D. Brachioradialis is a synergist in forearm flexion but not the primary flexor.

Question 2 of 5

All of the following muscles involved in wrist and finger extension receive innervation from the radial nerve except:

Correct Answer: C

Rationale: The correct answer is C: Extensor digiti minimi. The extensor digiti minimi muscle is innervated by the posterior interosseous nerve, a branch of the radial nerve. The other muscles listed (A, B, D) are all involved in wrist and finger extension and receive innervation from the radial nerve directly. Therefore, extensor digiti minimi is the exception as it is not innervated by the radial nerve, unlike the other muscles mentioned.

Question 3 of 5

The nurse is reviewing information about evidence-based practice (EBP). Which statement best reflects EBP?

Correct Answer: C

Rationale: The correct answer is C because evidence-based practice (EBP) emphasizes the integration of best available evidence with clinician expertise and patient preferences. This approach ensures that clinical decisions are informed by the most current and relevant evidence, while also considering the individual needs and values of the patient. Choice A is incorrect because EBP does not rely solely on tradition but on empirical evidence. Choice B is incorrect as it oversimplifies EBP as just using best practice techniques without considering the broader context. Choice D is incorrect because patient preferences play a crucial role in EBP to provide patient-centered care.

Question 4 of 5

When reviewing the concepts of health, the nurse recalls that the components of holistic health include which of these?

Correct Answer: D

Rationale: The correct answer is D because holistic health emphasizes the interconnectedness of the mind, body, and spirit, viewing them as interdependent aspects of an individual's overall well-being. This approach recognizes that all three components must be in balance for optimal health. Choice A is incorrect because disease can also originate internally. Choice B is incorrect as humans are influenced by their environment. Choice C is incorrect as multiple healthcare professionals contribute to a patient's health state, not just nurses.

Question 5 of 5

Which of the following is an indication for microwave diathermy?

Correct Answer: D

Rationale: The correct answer is D. Microwave diathermy is used to increase heat to muscles, joints, and tissues, aiding in pain relief, improving circulation, and promoting healing. Choice A is correct as it helps increase heat to muscles. Choice C is also correct as it helps increase heat to joints. Choice B is incorrect because microwave diathermy is not typically used for resolving hematomas, as other modalities like cold therapy are more effective. Therefore, D is the correct answer as it encompasses all the indications for microwave diathermy.

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