Nokea
Where would you see the nodes of Ranvier?
- A. on an axon
- B. in the cell body
- C. on a dendrite
- D. a and c
Correct Answer: A
Rationale: Nodes of Ranvier are small gaps in the myelin sheath along the axon of a neuron. They play a critical role in the rapid conduction of electrical signals, as the action potential 'jumps' from one node to the next in a process called saltatory conduction. This increases the speed and efficiency of neural communication. Nodes of Ranvier are essential for proper nerve function and are found exclusively on axons.
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To assess a patient's recent memory, the nurse should:
- A. Ask the patient to recall recent events or conversations.
- B. Check the patient's ability to recognize familiar faces.
- C. Measure the patient's blood pressure.
- D. Inspect the patient's gait.
Correct Answer: A
Rationale: Recent memory is assessed by asking the patient to recall recent events or conversations. Recognizing faces, blood pressure, and gait are unrelated to memory assessment.
When teaching a patient with a seizure disorder about the medication regimen, what is it most important for the nurse to emphasize?
- A. The patient should increase the dosage of the medication if stress is increased.
- B. Most over-the-counter and prescription drugs are safe to take with antiseizure drugs.
- C. Stopping the medication abruptly may increase the intensity and frequency of seizures.
- D. If gingival hypertrophy occurs
Correct Answer: C
Rationale: Abrupt discontinuation of antiseizure drugs can lead to rebound seizures
Which statements describe neurosyphilis (select one that doesn't apply)?
- A. Occurs 10 to 20 years after bacterial infection
- B. Infection can affect any part of the nervous system
- C. Descending paralysis with cranial nerve involvement
- D. Degenerative changes in the spinal cord and brainstem
Correct Answer: C
Rationale: Neurosyphilis typically presents with degenerative changes in the CNS and can affect various parts of the nervous system.
What functions does the thalamus have?
- A. Registers auditory input
- B. Integrates past experiences
- C. Relays sensory and motor input to and from the cerebrum
- D. Controls and facilitates learned and automatic movements
Correct Answer: C
Rationale: The thalamus serves as a relay station for sensory and motor inputs to the cerebrum.
When assessing the patient's speech, the nurse should look for:
- A. Any slurred speech or difficulty articulating words.
- B. Normal tone and rhythm of speech.
- C. Absence of speech abnormalities.
- D. Clear and coherent communication.
Correct Answer: A
Rationale: Slurred speech or difficulty articulating words may indicate neurological issues. Normal tone, absence of abnormalities, and clear communication are expected findings.