ATI LPN
Quizlet Adult Medical Surgical Head Injury Monitoring Neurological Status Questions
Question 1 of 5
A 62-year-old man presents with progressive proximal lower extremity muscle weakness. He reports difficulty with climbing the stairs and getting up from a chair. He also reports that his mouth has been constantly dry. These symptoms began approximately 3 weeks prior to presentation. Medical history is significant for recently diagnosed small cell carcinoma of the lungs. On physical examination, there is no evidence of muscle atrophy. There is 4/5 strength bilaterally in the hip flexors and extensors, with absent patellar reflexes. When asking the patient to contract both quadriceps for 10 seconds, his patellar reflexes become 2+. Which of the following is most likely to be found on serology?
Correct Answer: B
Rationale: Proximal weakness, dry mouth, and reflex facilitation with small cell lung cancer suggest Lambert-Eaton myasthenic syndrome, associated with anti-P/Q VGCC antibodies.
Question 2 of 5
Action potentials relay different intensities of information due to the
Correct Answer: B
Rationale: Action potentials are all-or-none, but their frequency increases with stimulus intensity, encoding strength via rate coding.
Question 3 of 5
The simplest animals to display cephalization and centralization of the nervous system are
Correct Answer: B
Rationale: Flatworms (e.g., planarians) show cephalization (head with nerve concentration) and a simple centralized nervous system, unlike sponges or cnidarians.
Question 4 of 5
The brain of humans is strongly oriented toward the interpretation of
Correct Answer: B
Rationale: Humans have a highly developed visual cortex, emphasizing vision as a primary sensory modality.
Question 5 of 5
Schizophrenia
Correct Answer: B
Rationale: Schizophrenia features hallucinations and delusions, distinguishing it from depression or dementia.