What cranial nerve is responsible for the taste sensation of the posterior third of the tongue?
Facial
Abducens
Glossopharyngeal
Hypoglossal
The Correct Answer is C
Choice A Reason:
The facial nerve, or cranial nerve VII, is responsible for the taste sensation in the anterior two-thirds of the tongue, not the posterior third. It carries taste sensations from the front part of the tongue via the chorda tympani branch.
Choice B Reason:
The abducens nerve, or cranial nerve VI, has no role in taste sensation. It is primarily involved in controlling the lateral rectus muscle of the eye, which abducts the eye.
Choice C Reason:
The glossopharyngeal nerve, or cranial nerve IX, provides special sensory innervation for taste to the posterior third of the tongue. This enables the sensation of various tastes like salty, sweet, sour, and bitter in this region.
Choice D Reason:
The hypoglossal nerve, or cranial nerve XII, is responsible for motor control of the tongue muscles but does not provide sensory innervation for taste.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason:
The primary purpose of health assessment is to collect, analyze, and interpret data to identify the patient’s health status and needs, as well as to develop and implement appropriate nursing interventions to address these needs. It is a systematic process that is fundamental in promoting the health and well-being of patients. This involves a comprehensive evaluation of the patient's physical, psychological, and social health. Gathering this information is crucial for creating a care plan that addresses the individual needs of the client.
Choice B reason:
While health assessments can aid physicians in diagnosing illness, they are not solely for the purpose of diagnosis without further testing. Health assessments may indicate the need for additional tests to confirm a diagnosis. The nurse's role includes supporting the diagnostic process, but it is not the primary purpose of health assessment.
Choice C reason:
Health assessments are not meant to be subjective or based on the nurse's personal views and beliefs. The assessments are conducted to objectively determine the health status of a client, which then informs evidence-based practice and care planning. Personal biases should not influence the management of a client's illness.
Choice D reason:
Making judgments about a client's lifestyle and behaviors is not the primary purpose of health assessment. While lifestyle and behaviors may be assessed as part of understanding the client's overall health status, the goal is not to judge but to understand how these factors may impact the client's health and to provide education and support for healthy changes if needed.
Correct Answer is D
Explanation
The correct answer is d) Stage II.
Choice a reason:
Stage IV pressure ulcers are the most severe, with full-thickness skin loss and exposed bone, tendon, or muscle. Signs of stage IV include large-scale tissue loss, possibly including slough or eschar, and may include undermining and tunneling. The scenario described does not indicate such an advanced stage, as there is no mention of exposed deeper tissues or structures.
Choice b reason:
Stage III pressure ulcers involve full-thickness skin loss, potentially affecting subcutaneous tissue but not extending to underlying muscle or bone. The wound may have a crater-like appearance. The described condition does not match stage III, as there is no indication of the ulcer extending into subcutaneous tissue.
Choice c reason:
Stage I pressure ulcers present with intact skin and non-blanchable redness of a localized area usually over a bony prominence. The skin may be painful, firm, soft, warmer, or cooler compared to adjacent tissue. In the given scenario, the skin is not intact, ruling out stage I.
Choice d reason:
Stage II pressure ulcers are characterized by partial-thickness loss of dermis presenting as a shallow open ulcer with a red-pink wound bed, without slough. They may also present as intact or ruptured blisters. The description of the skin condition with erythema, serosanguineous drainage, and a blister-like appearance aligns with a stage II pressure ulcer.
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