Nokea
Dopamine is an important neurotransmitter. Which disease or disorder results when the neurons in the brain that produce dopamine die?
- A. Multiple sclerosis
- B. Lou Gehrig disease (amyotrophic lateral sclerosis)
- C. Parkinson disease
- D. Seizure disorder
Correct Answer: C
Rationale: Parkinson disease is caused by the degeneration of dopamine-producing neurons in the brain, leading to motor symptoms such as tremors and rigidity. Multiple sclerosis and ALS involve different neurological mechanisms, while seizure disorders are related to abnormal electrical activity in the brain. Dopamine's role in motor control is critical to understanding Parkinson disease.
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All of the following are branches of the ophthalmic division of the trigeminal nerve EXCEPT:
- A. Lacrimal nerve
- B. Infraorbital nerve
- C. Supraorbital nerve
- D. Infratrochlear nerve
Correct Answer: B
Rationale: The infraorbital nerve is a branch of the maxillary division (V2) of the trigeminal nerve, not the ophthalmic division (V1). It supplies sensation to the lower eyelid, cheek, and upper lip.
Which functional cell of the nervous system is responsible for transmission of information from one cell to another?
- A. nerves
- B. neurons
- C. ganglions
- D. glial cells
Correct Answer: B
Rationale: Neurons are specialized cells that transmit electrical and chemical signals throughout the nervous system. They are the primary functional units of the nervous system, responsible for processing and transmitting information to other neurons, muscles, or glands.
Nurse Anderson is preparing to conduct an initial assessment of Mrs. Green, a 63-year-old woman admitted with Parkinson's Disease. She collaborates with the dietician to tailor Mrs. Green's diet, especially considering her medication, levodopa. Nurse Anderson discusses with the dietician about which type of food should be limited or avoided for a patient taking levodopa. What type of food should they focus on?
- A. Food rich in Vitamin B6.
- B. Food rich in Thiamine.
- C. Food rich in Vitamin E.
- D. Food rich in Vitamin C.
Correct Answer: A
Rationale: Vitamin B6 can interfere with the effectiveness of levodopa, so it should be limited in the diet of PD patients.
The nurse is caring for a client with ICP. Why will the nurse position the client in bed with HOB elevated to 30 degrees?
- A. Makes it easier for the client to breathe
- B. Prevents the Valsalva maneuver
- C. Promotes venous drainage
- D. Reduces pain
Correct Answer: C
Rationale: Elevating the head of the bed to 30 degrees promotes venous drainage from the brain, reducing intracranial pressure (ICP). This position helps improve cerebral perfusion and prevents complications associated with increased ICP, such as brain herniation.
Which of the following findings would indicate a change in a patient's mental status?
- A. Sudden onset of confusion or disorientation.
- B. Steady gait and normal speech.
- C. Clear and coherent communication.
- D. Stable vital signs and regular breathing.
Correct Answer: A
Rationale: A sudden onset of confusion or disorientation is a key indicator of a change in mental status. Steady gait, clear communication, and stable vital signs are normal findings.